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Professional Appointments
2020-present Assistant Professor Department of Biology University of Louisville 2018-2019 Postdoctoral Fellow University of Illinois and Oregon State University Advisors: Dr. Katy Heath and Dr. Posy Busby Education Department of Biology, Indiana University, Bloomington, IN Doctorate of Philosophy in Evolution Ecology and Behavior, December 2017 Minor in College Pedagogy Graduate Certificate in College Pedagogy Committee: Dr. Keith Clay (advisor), Dr. Spencer Hall, Dr. Thomas Nelson Laird, Dr. Jay Lennon; Cumulative GPA: 4.0/4.0 Vanderbilt University, Nashville, TN Bachelor of Arts in Ecology, Evolution, and Organismal Biology, May 2012 Bachelor of Arts in Spanish, May 2012 Cumulative GPA: 3.60/4.0; Ecology Major GPA: 3.53/4.0; Spanish Major GPA: 3.78/4.0 Organization for Tropical Studies, Costa Rica Tropical Biology: An Ecological Approach, Graduate Program, Summer 2013 Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile Council on International Educational Exchange (CIEE) Study Abroad Program, Spring 2011 Grants ($1,441,682 to date) 2023 United States Department of Agriculture Ecology and Evolution of Infectious Diseases program (Co-PI; $364,897 to UofL; $2.5 million total) 2023 KY INBRE Equipment Grant ($9,980; with M. Abolins-Abols) 2022 National Science Foundation Division of Environmental Biology ($864,975; with Co-PI S. Emery) 2022 University of Louisville Jon Rieger Seed Grant ($7,500) 2021 KY INBRE Course-based Undergraduate Research Experiences Award ($92,400; with R. Pigg) 2020 University of Louisville College of Arts & Sciences Research and Creative Activities Grant ($3,000; with R. Pigg) 2019 Mycological Society of America Special Topics Award ($7,500) 2019 Mycological Society of America Translational Mycology Postdoctoral Award ($1,250) 2018 University of Illinois Campus Research Board Award ($22,329, with K. Heath) 2017 Simons Foundation Seed Grant ($12,000, with E.A. Herre and B. Sedio) 2017 Indiana University Fred Seward Award ($2,500) 2017 McCormick Science Grant ($2,500) 2017 Garden Club of America Award in Tropical Botany ($5,500) 2017 Indiana University Women in Science Program Provost Travel Grant ($500) 2016 National Science Foundation Doctoral Dissertation Improvement Grant (DDIG) ($19,551) 2015 Indiana Academy of Science Senior Research Grant ($2,264) 2015 National Science Foundation Graduate Research Internship Program (GRIP) Grant ($5,000) 2015 Indiana University Graduate Sustainability Research Development Grant ($6,882) 2014 Sigma Xi Grant-in-Aid of Research ($700) 2014 Indiana University Research and Teaching Preserve Grant ($500) 2014 Mycological Society of America Forest Fungal Ecology Award ($1,000) 2014 Garden Club of America Anne S. Chatham Fellowship in Medicinal Botany ($4,500) 2014 Indiana University Sears Crowell Scholarship ($1,000) 2013 Indiana University Women in Science Program Provost Travel Grant ($1,000) 2013 Indiana Academy of Science Senior Research Grant ($1,502) 2013 Organization for Tropical Studies Post-Course Grant ($952; declined) Fellowships and Awards 2023 University of Louisville Early Career Researcher of the Year 2023 Ecological Society of America Early Career Fellow 2018 United States Department of Agriculture AFRI Postdoctoral Fellowship 2017 Indiana University Floyd Plant and Fungal Summer Fellowship 2017 Indiana University Plant and Fungal Biology Program Floyd/Ogg/Cleland Final Year Fellowship 2016 Smithsonian Institution Predoctoral Student Fellowship 2013 Smithsonian Tropical Research Institute Short-Term Fellowship 2013 Indiana University Floyd Plant and Fungal Summer Fellowship 2013 Indiana University Departmental Research Recruitment Fellowship 2012 National Science Foundation Graduate Research Fellowship Program (GRFP) Teaching Awards 2023 University of Louisville Student Champion 2021 – 2022 Nominated for University of Louisville Faculty Favorite Award 2022 University of Louisville Furnish Teaching Award 2022 University of Louisville TILL Teaching Innovation Award 2020 – 2021 Nominated for University of Louisville Faculty Favorite Award 2021 University of Louisville Student Champion 2021 University of Louisville Furnish Teaching Award 2019 – 2020 Nominated for University of Louisville Faculty Favorite Award 2020 University of Louisville Furnish Teaching Award 2017 Indiana University Albert Ruesink Outstanding Associate Instructor Teaching Award in Biology Publications Abolins-Abols, M., N. Christian, J.A. Masters, and R.M. Pigg. In press. “A customizable inquiry-based statistics teaching application for introductory biology students.” Course Source. Christian, N. and M.H. Perlin. 2024. “Plant-endophyte communication: scaling from molecular mechanisms to ecological outcomes.” Mycologia DOI: 10.1080/00275514.2023.2299658. Garces, K.R., H.E. Sage, N. Christian, and S.M. Emery. 2022. “Epichloë increases root fungal endophyte richness and alters root fungal endophyte composition in a changing world.” Journal of Fungi 8: 1142. Christian, N, B. Espino Basurto, A. Toussaint, X. Xu, E. A. Ainsworth, P. E. Busby, and K. D. Heath. 2021. "Elevated carbon dioxide reduces a dominant soybean leaf endophyte.”Global Change Biology 27(17): 4154-4168. Whitaker, B.K., N. Christian, Q. Chai, and K. Clay. 2020. "Foliar microbiome community structure is independent of phylogenetic relatedness in an Asteraceae common garden." Ecology and Evolution. 10:13895–13912. Whitaker, B.K., N. Christian, Q. Chai, and K. Clay. In press. "Foliar microbiome community structure is independent of phylogenetic relatedness in an Asteraceae common garden." Ecology and Evolution. Christian, N., B. E. Sedio, X. Florez-Buitrago, L. A. Ramírez-Camejo, E. I. Rojas, L. C. Mejía, S. Palmedo, A. Rose, J. W. Schroeder, E. A. Herre (2020). “Host affinity of endophytic fungi and the potential for reciprocal interactions involving host secondary chemistry.” American Journal of Botany 107: 219-228. (Special Issue). Zanne, A., K. Abarenkov, M. Afkhami, C. Aguilar-Trigueros, S. Bates, P. Busby, N. Christian, et. al. (2019). "Fungal functional ecology: Bringing a trait-based approach to plant-associated fungi." Biological Reviews. doi:10.1111/brv.12570 Christian, N., E.A. Herre, and K. Clay. 2019. "Foliar endophytic fungi alter patterns of nitrogen uptake and distribution in Theobroma cacao." New Phytologist 222: 1573-1583. doi:10.1111/nph.15693. Christian, N. and K.D. Kearns. 2018. "Using scaffolding and deliberate practice to improve scientific writing in an introductory biology laboratory course." Journal of Microbiology and Biology Education. 19(2): doi:10.1128/jmbe.v19i2.1564. Christian, N. and J.D. Bever. 2018. "Carbon allocation and competition maintain variation in plant root mutualisms." Ecology and Evolution 8(11):5792-5800. doi: 10.1002/ece3.4118. Christian, N., E. A. Herre, L. C. Mejia, and K. Clay. 2017. “Exposure to the leaf litter microbiome of healthy adults protects cacao seedlings from pathogen damage.” Proceedings of the Royal Society B 284(1858). doi: 10.1098/rspb.2017.0641.
Christian, N., B.K. Whitaker, and K. Clay. 2017. “A novel framework for decoding fungal endophyte diversity.” In The Fungal Community: Its Organization and Role in the Ecosystem 4th Edition. Eds. John Dighton, James White and Peter Oudemans. Submitted as an invited contribution. Christian, N., C. Sullivan, N. D. Visser, and K. Clay. 2016. “Plant host and geographic location drive endophyte community composition in the face of perturbation.” Microbial Ecology 72(3): 621-632. doi: 10.1007/s00248-016-0804-y. Christian, N., B.K. Whitaker, and K. Clay. 2015. Microbiomes: unifying animal and plant systems through the lens of community ecology theory. Frontiers in Microbiology. 6:869. doi: 10.3389/fmicb.2015.00869 Lawson, S., N. Christian, and P. Abbott. 2014. Comparative analysis of the biodiversity of fungal endophytes in insect-induced galls and surrounding foliar tissue. Fungal Diversity 66:89-97. Mitchell, S., C. Ellingston, T. Coyne, L. Hall, M. Neill, N. Christian, C. Higham, S. F Dobrowolski, M. Trachman, and M. Summar. 2009. Genetic variation in the urea cycle: a model resource for investigating key candidate genes for common diseases. Human Mutation 30:56-60. Invited Talks 2023 Washington State University, Richland, WA 2023 University of Louisville 2023 Celebration of Teaching and Learning, Louisville, KY 2022 KY INBRE Seminar Series, Louisville, KY 2022 University of Louisville 2022 Celebration of Teaching and Learning, Louisville, KY 2021 Kentucky-Tennessee Branch of the American Society for Microbiology, University of Kentucky, Lexington, KY 2021 University of San Francisco, San Francisco, CA 2021 University of Kentucky, Lexington, KY 2021 Plant Biology 2021 Worldwide Summit 2021 Smithsonian Tropical Research Institute, Frontiers in Tropical Marine and Terrestrial Microbial Ecology Symposium 2020 KY STEMinar, Kentucky Science Center, Louisville, KY 2019 Purdue University, West Lafayette, IN 2019 Ecological Society of America Organized Oral Session, Louisville, KY (Session Organizer) 2019 Smithsonian Tropical Research Institute, Tupper Talk, Panama City, Panama 2019 The University of Louisville, Louisville, KY 2017 Association for Tropical Biology and Conservation, Mérida, Mexico 2016 Smithsonian Tropical Research Institute, Science Symposium, Panama City, Panama Posters and Presentations (*presenting author, †mentored undergraduate) Throneburg, E.*◊, R. Pigg, N. Christian, M. Abolins-Abols, J. Masters. 2024. Investigating science identity development within a course-based undergraduate research experience (CURE). Southeastern STEM Education Conference. Murfreesboro, TN. Poster. Throneburg, E.*◊, R. Pigg, N. Christian, M. Abolins-Abols, J. Masters. 2023. Investigating science identity development within a course-based undergraduate research experience (CURE). National Association of Biology Teachers. Baltimore, ML. Poster. Morozumi, C.*, K. Heath, L. Ainsworth, K. Griesbaum, I. Sosa, and N. Christian. 2023. Elevated CO2 drives community and network structural change within foliar microbiomes of soybean. Ecological Society of America. Portland, OR. Talk. Paolucci, A*◊., N. Gauthier, and N. Christian. 2023. Endophytic leaf microbes in hemp respond to fungicide application and pathogen inoculation. Kentucky-Tennessee Branch of the American Society for Microbiology Spring Meeting. Midway, KY. Talk (awarded 3rd place oral presentation). Goshorn, W., R. Isaacs, R. Hopp, N. Christian, J. Masters, and M.S. DeCaro. 2023. Do Clicker Questions Enhance Students’ Conceptual Understanding? University of Louisville Undergraduate Arts and Research Showcase. Louisville, KY. Poster. Morozumi, C.*, K. Heath, L. Ainsworth, K. Griesbaum, I. Sosa, and N. Christian. 2023. Elevated CO2 drives community and network structural change within foliar microbiomes of soybean. Midwestern Ecology and Evolution Conference. Louisville, KY. Talk. Visser, N.D.*◊ and N. Christian. 2023. Foliar endophytic fungi alter plant host chemistry. Midwestern Ecology and Evolution Conference. Louisville, KY. Talk. G. Bryant*, K. Garces◊, N .Christian, and S. Emery. 2023. Fungal root endophyte growth rates along nutrient stress gradient. Midwest Ecology and Evolution Conference. Louisville, KY. Poster. Garces, K.*◊, H. Sage†, N. Christian, and S. Emery. 2023. A key aboveground fungal symbiont increases root endophyte richness in a changing world. Global Soil Biodiversity Conference. Dublin, Ireland. Talk. Pigg, R.*, N. Christian*, M. Abolins-Abols*, and J. Masters*. 2022. Scaffolding Scientific Inquiry, Quantitative Skills, and Collaborative Writing within a Course-based Undergraduate Research Experience (CURE). National Association of Biology Teachers. Indianapolis, IN. Talk. Garces, K.*◊, A. Sexton, N. Steffens, A. Hazelwood†, and N. Christian. 2022. Addressing student engagement and comprehension within online versus in-person discussions. National Association of Biology Teachers. Indianapolis, IN. Poster (awarded 2nd place poster). Steffens, N.*, N. Christian, Garces, K.◊, A. Hazelwood†, and A. Sexton. 2022. Discussion modality and exam performance in introductory environmental biology. National Association of Biology Teachers. Indianapolis, IN. Poster. Garces, K.*◊, H. Sage†, N. Christian, and S. Emery, 2022. A key aboveground fungal symbiont increases root endophyte richness in a changing world. Ecological Society of America. Montreal, Canada. Talk. Matthews, A*†, K. Garces◊, and N. Christian. 2022. Impact of nitrogen availability on fungal biomass. University of Louisville Undergraduate Arts and Research Showcase. Louisville, KY. Poster. Hazelwood, A.*†, K. Garces◊, N. Steffens, A. Sexton, and N. Christian. 2022. Addressing learning comprehension of online versus face-to-face discussions. University of Louisville Undergraduate Arts and Research Showcase. Louisville, KY. Poster (awarded 2nd place poster). Qassi, H.*†, V. Kukharskaya*†, N. Christian, and R. Pigg. 2022. The correlation between active learning and the achievement gap in introductory biology courses. University of Louisville Undergraduate Arts and Research Showcase. Louisville, KY. Poster (awarded 1st place poster). Ayer, K., R. Isaacs, J. Masters, N. Christian, R. Hopp, M. DeCaro. 2022. Does collaborative learning enhance exploratory learning? University of Louisville Undergraduate Arts and Research Showcase. Louisville, KY. Poster. Garces, K.*◊, S. Emery, and N. Christian. 2021. Fungal life-history traits vary along a resource availability gradient. Kentucky Academy of Sciences. Virtual meeting. Talk. Christian, N.*, B. E. Sedio, X. Florez-Buitrago, L. A. Ramírez-Camejo, E. I. Rojas, L. C. Mejía, S. Palmedo, A. Rose, J. W. Schroeder, and E. A. Herre. 2021. Plant-fungal chemical feedbacks mediate host affinity and functional roles of endophytes. Ecological Society of America. Long Beach, CA. Poster. Whitaker, B. K., Q. Chai, N. Christian, K. Clay, H. L. Reynolds, and C. V. Hawkes. 2021. Host genetic by environment interactions in crop and wild plant microbiomes. Ecological Society of America. Long Beach, CA. Symposium Talk. Sage, H.*†, K. Garces◊., H. Payne†, M. Huber, and N. Christian. 2021. Root endophyte community response to Nitrogen availability. Summer Research Opportunity Program Poster Symposium. Louisville, KY. Poster Payne, H.*†, H. Sage*†, M. Huber, N. Christian, and K. Garces◊. 2021. Root endophyte community response to increased resource availability. University of Louisville Undergraduate Arts and Research Showcase. Louisville, KY. Poster. Comissiong, A.*†, M. Huber, N. Christian, and K. Garces◊. 2021. Does resource availability influence traits of root endophytes in native dune grasses? University of Louisville Undergraduate Arts and Research Showcase. Louisville, KY. Poster. Basurto, B.*†, N. Christian, and K. Heath. 2019. Fungal endophytes interact with endophytic yeast isolated from soybean leaves. Illinois Summer Research Symposium. Urbana, IL. Poster. Christian, N.*, E. A. Herre, L.C. Mejia, and K. Clay. 2018. Exposure to the leaf litter microbiome of healthy adults protects cacao seedlings from pathogen damage. Green Life Sciences Symposium. Ann Arbor, MI. Speedtalk. Christian, N.*, and E. A. Herre. 2018. Rapid changes associated with fungal communities of decomposing tropical leaf litter. Ecological Society of America. New Orleans, LA. Talk. Toussaint, A.*†, N. Christian, and K. Heath. 2018. How does climate change affect endophytic fungi? Illinois Summer Research Symposium. Urbana, IL. Poster. Christian, N., A. E. Zanne, K. Abarenkov, M. E. Afkhami, C. A. Aguilar-Trigueros, S. Bates, P. E. Busby, W. Cornwell, T. W. Crowther, H. Flores-Moreno, D. Floudas, R. Gazis, D. Hibbett, P. Kennedy, D. L. Lindner, D. S. Maynard, A. M. Milo, R. H. Nilsson, J. Powell, M. Schildhauer, J. Schilling, J. M. Bhatnagar, and K. K. Treseder. 2018. Fungal functional ecology: Bringing a trait-based approach to plant-associated fungi. International Mycological Congress. San Juan, Puerto Rico. Poster Christian, N.*, N.D. Visser†, and K. Clay. 2017. Foliar endophytic fungi alter plant host chemistry. Ecological Society of America. Portland, OR. Poster (ESA Microbial Ecology Section Student Travel Grant). Whitaker, B.K.*, N. Christian, Q. Chai, K. Clay. 2017. Foliar microbiome community assembly driven by phylogenetic relatedness of Asteraceae hosts in a common garden. Ecological Society of America. Portland, OR. Talk. Christian, N.*, E. A. Herre, and K. Clay. 2016. Preferential allocation of nutrients to foliar endophytic fungi. Ecological Society of America. Ft. Lauderdale, FL. Talk. Whitaker, B.K.*, Q. Chai, N. Christian, K. Clay. 2016. Fungal endophyte community characterization in the plant family Asteraceae - do microbiomes correlate with plant phylogenetic relatedness? Indiana Academy of Science Annual Meeting. Indianapolis, IN. Poster. Nagle, M.*, L. Montroni*, N. Christian*, M. Marasco*, K. Kearns*. 2016. Filling the Gaps: Engaging Advanced Graduate Students in Scholarship of Teaching and Learning. E.C. Moore Symposium on Excellence in Teaching. Indianapolis, IN. Talk. Christian, N.*, E. A. Herre, L. C. Mejia, and K. Clay. 2016. Canopy and leaf litter affect composition and function of tropical endophyte communities. Smithsonian Tropical Research Institute Fellows and Interns Symposium. Panama City, Panama. Poster. Christian, N.*, E. A. Herre, L. C. Mejia, and K. Clay. Canopy height and litter-derived spore sources affect both composition and function of tropical endophyte communities. Ecological Society of America. Baltimore, MD. Talk. Christian, N.*, E. A. Herre, L. C. Mejia, and K. Clay. Canopy height and litter-derived spore sources affect both composition and function of tropical endophyte communities. Midwest Ecology and Evolution Conference. Bloomington, IN. Talk. Sullivan, C.*†, N. Visser*†, N. Christian, and K. Clay. 2015. Fungicide application increases diversity of foliar endophytic fungi. Midwest Ecology and Evolution Conference. Bloomington, IN. Poster. Christian, N.*, C. Sullivan†, N. Visser†, and K. Clay. 2015. Fungal endophyte biodiversity at the plant-insect interface. Indiana Academy of Science Annual Meeting. Indianapolis, IN. Talk. Christian, N.* 2014. Assembly of tropical fungal endophyte communities. Indiana University EEB Brown Bag Seminar Series. Bloomington, IN. Talk. Christian, N.* 2014. Fungal endophyte biodiversity at the plant-insect interface. Smithsonian Tropical Research Institute “Bambi” Seminar Series. Barro Colorado Island, Panama. Talk. Christian, N.* and J. Bever. 2013. Maintenance of mutualistic plant-soil symbiont interactions by means of differential carbon allocation. Association for Tropical Biology and Conservation, San José, Costa Rica. Poster (Davidson-Cristoph Travel Award). Christian, N.* and J. Bever. 2013. Maintenance of the plant-soil symbiont mutualism by means of differential carbon allocation. Midwest Ecology and Evolution Conference, South Bend, IN. Poster. Christian, N.* and M. Summer. 2008. Using glutathione levels as indicators of oxidant injury and post-surgical pulmonary hypertension. Tennessee Junior Academy of Sciences Symposium, Nashville, TN. Talk (second-place presentation). Teaching and Pedagogy Experience 2020 Instructor; Biology: Issues and Applications; University of Louisville 2017 Head Associate Instructor; Introduction to Biology Laboratory; Indiana University 2017 Site Visitor; Advance College Project; Indiana University 2016 Panelist; Course Design Workshop; Center for Innovative Teaching and Learning at Indiana University 2016 Instructor of Record; The Feminist Scientist: What’s the problem with women in science?; Indiana University 2015, 2017 Facilitator; Associate Instructor Orientation Workshop on Classroom Climate; Indiana University 2015, 2016 Co-instructor; Roots, Fruits, and Resiliency: Cultural Ecology, Sustainable Agriculture & Eco-Heritage Tourism in Jamaica; Indiana University 2015 Center for Innovative Teaching and Learning Faculty Advisory Board; Indiana University 2015 Co-course developer; Biodiverse-City! The art and science of green infrastructure; Indiana University 2014 – 2017 Member; Graduate Student Learning Community 2012 Head Associate Instructor; Introduction to Biology Laboratory; Indiana University 2009 – 2012 Tutor; Academic Support for Student Athletes; Vanderbilt University Mentorship 2019 Julia Paoli (University of Illinois); Project: Effect of soybean genotype on rhizobia nodulation and plant traits 2019 Baldemar Basurto (Bakersfield College); Phenotypic Plasticity Research Experience for Community College Students (NSF REU program); Project: In vitro competition between soybean-associated fungal endophytes 2018-2019 Xinyan Xu (Fujian Agriculture and Forestry University); Undergraduate exchange student 2018 Amber Toussaint (Malcolm X College); Phenotypic Plasticity Research Experience for Community College Students (NSF REU program); Project: Effect of climate change on the soybean microbiome 2014 – 2016 Noelle Visser (Indiana University); Project: Effect of foliar endophytic fungi on plant secondary chemistry 2013 – 2015 Courtney Sullivan (Indiana University); Honors thesis: Endophytic fungal community dynamics of White Snakeroot (Ageratina altissima) in the face of disturbance; Achievements: Hutton Honors College Grant ($1000); Fox Glen Research and Education Fund Award ($500) Guest Lectures 2016, 2017 “Fixing the leaky pipeline: The importance of women in science, and the role of STEM education.” Women in Science, Technology, Engineering, and Mathematics Living-Learning Center Seminar Course. Indiana University. 2014, 2016, 2017 “Seeing beyond the ‘green wall’: Tropical rainforest biodiversity.” Biodiversity L307. Indiana University. 2015 "Guiding student inquiry in biology." Teaching in Biology Z620 (graduate course). Indiana University. 2014 “El desarrollo de comunidades de hongos endofíticos tropicales.” Introductory Field Course to Tropical Biology). Smithsonian Tropical Research Institution, Barro Colorado Island, Panama. Presented in Spanish. Service and Outreach 2017 Invasive Species Ecologist Search Committee; Indiana University; Department of Biology 2016 EcoLunch Social Chair; Indiana University Department of Biology 2016 – 2017 Volunteer; Bloomington Urban Woodlands Project 2015 Publicity Committee Member; Midwest Ecology and Evolution Conference 2014 – 2015 Coordinator; “Fruits of the Forest” Service Learning Program; Bloomington Urban Woodlands Project 2013 – 2014 Outreach Intern; Bloomington Urban Woodlands Project 2013 – 2014 Committee Member; Indiana University Office of Sustainability Environmental Quality and Land Use Working Group Hosting 2012 – 2013 Committee Chair; Indiana University Department of Biology Graduate Recruiting Weekend (GRW) Working Groups and Professional Societies Working Groups: NCEAS WG: Fungal Traits (2016-present) Professional Societies: American Association for the Advancement of Science, Ecological Society of America, Indiana Academy of Sciences, Mycological Society of America Ad hoc Reviews: American Journal of Botany, Ecology, Frontiers in Ecology and Evolution, Fungal Biology, Fungal Ecology, The ISME Journal, Journal of Ecology, New Phytologist, Microbial Ecology, Mycologia, Pedobiologia, Philosophical Transactions of the Royal Society B, PloS ONE Previous Research Experience 2010 – 2012 Vanderbilt University Undergraduate Student; Advisor: Dr. Patrick Abbot; Biodiversity of endophytic fungi in insect- induced galls; Social behavior of Pemphigus aphids 2010 Vanderbilt University Research Assistant, Advisor: Dr. Antonis Rokas; Next-generation sequencing and whole-genome phylogenetic analysis of various species of yeast 2006 – 2009 Vanderbilt University Medical Center Intern, Advisor: Dr. Marshall Summar; Oxidant injury and post-surgical pulmonary hypertension in congenital heart defect patients; Enzymatic polymorphisms in urea cycle disorder patients |