Question: What branch of biology is Martien Kas an associate professor for?
Context: Julie Huber is an Associate Scientist in the Marine Chemistry and Geochemistry department at Woods Hole Oceanographic Institution.  She previously was an Associate Professor of Ecology and Evolutionary biology at Brown University, an Associate Scientist at the Marine Biological Laboratory in Woods Hole, Massachusetts, and the Associate Director of the MBL's Josephine Bay Paul Center for Comparative Molecular Biology and Evolution.  She also serves as the associate director of the Center for Dark Energy Biosphere Investigations, a National Science Foundation-supported program headquartered at the University of Southern California. Michel Justin Dumontier (born 1975) is a Distinguished Professor of Data Science at Maastricht University.  His research focuses on methods to represent knowledge on the web with applications for drug discovery and personalized medicine.  He was previously an Associate Professor of Medicine (Biomedical Informatics) at the Stanford University School of Medicine and an Associate Professor of Bioinformatics at Carleton University.  He is best known for his work in biomedical ontologies, linked data and biomedical knowledge discovery.  He has taught courses on biochemistry, bioinformatics, computational systems biology, and translational medicine.  His research has been funded by Natural Sciences and Engineering Research Council, Canada Foundation for Innovation, Mitacs Canada, the Ontario Ministry of Research, Innovation and Science, CANARIE, and the US National Institutes of Health.  Dumontier has an h-index of over 30 and has authored over 125 scientific publications in journals and conferences.  He lives in Maastricht with his wife Tifany Irene Leung and their lionhead rabbit Storm. Dr. V. Nagaraja (born 16 May 1954) is a Professor, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru.  He had received his B.Sc.  and M.Sc.  degrees in the year 1973 and 1975 from the Bangalore University.  He completed his Ph.D. in 1981 from Department of Microbiology and Cell Biology at IISc and the work on mycobacteriophage I3 and role of DNA gyrase in mycobacteria set the stage for his later work when he joined the Institute as an assistant professor in 1989.  After his PhD in 1981, he was a research associate at Biozentrum, University of Basel, Switzerland (1981–85) and at Department of Biology, University of Rochester, USA(1985–89).  He joined in 1989 as an Assistant Professor, in Centre for Genetic Engineering, IISc and was involved in setting up of the department.  He became an associate professor in 1995 at Department of Microbiology and Cell Biology, IISc, Professor in 2000 and served as professor and chairman of the department (2008–2013). Associate professor (frequently capitalized as Associate Professor) is an academic title that can have different meanings.  In North America and universities elsewhere using the North American system, it is a position between assistant professor and a full professorship.  In some Commonwealth countries, the title associate professor is often used in place of reader, which is used in the United Kingdom and a number of other Commonwealth universities; this usage is typical of universities in Australia and New Zealand, as well as in South Africa, India, parts of Southeast Asia, Ireland and other countries.  The title associate professor in those countries, like the title reader, corresponds to a full professorship in North America. Neuroscience (or neurobiology) is the scientific study of the nervous system.  It is a multidisciplinary branch of biology, that deals with the anatomy, biochemistry, molecular biology, and physiology of neurons and neural circuits.  It also draws upon other fields, with the most obvious being pharmacology, psychology, and medicine. Martien J.H. Kas (born 27 November 1966, Uithoorn) is associate professor in the Department of Translational Neuroscience, Brain Center Rudolf Magnus, at the University Medical Center in Utrecht, Netherlands, where he leads a work group entitled “Translational Behavioral Genetics” that researches cross-species behavioral genetics to better understand origins and develop treatments for psychiatric disorders. Steven N. Austad is a distinguished professor and department chair in the Department of Biology at the University of Alabama at Birmingham.  After earning an undergraduate degree in English literature from UCLA, he left academia for a number of years during which among other things, he drove a taxi cab in New York City, worked as a newspaper reporter, and trained large cats for television and movies.  His interest in science awakened by his animal training, he returned to academics to study animal behavior more formally, receiving his PhD in biology from Purdue University.  After postdoctoral research at the University of Mexico, he accepted a position as assistant professor in the Department of Organismic and Evolution Biology at Harvard University in 1986.  Leaving Harvard as an associate professor in 1993, he moved to University of Idaho where he became full professor.  From 2004 to 2013, he was a professor at the University of Texas Health Science Center at San Antonio.  He served as interim director of the Barshop Institute before moving to his current position in 2014. Kristina A. Curry Rogers is a vertebrate paleontologist and currently Associate Professor in geology and biology at Macalester College.  She holds a B.Sc.  in Biology from Montana State University, and a M.Sc.  Ph.D. in Anatomical Science from the State University of New York at Stony Brook.  Her work focuses on questions of dinosaur biology, bone histology, growth, and evolution, especially the Titanosauria, on which she wrote her doctoral dissertation.  Together with Catherine Forster, Associate Professor and her teacher at Stony Brook, she discovered and described "Rapetosaurus", the most complete Cretaceous sauropod and titanosaur found to date. Tobias C. Walther is a Professor of Genetics and Complex Diseases at the Harvard School of Public Health, and a Professor of Cell Biology at the Harvard Medical School.  He is also an Associate Member of the Broad Institute of MIT and Harvard.  His primary responsibilities are to provide leadership in research and teaching in the scientific fields of metabolism, membrane biology and lipids.  Before his appointment at Harvard, Dr. Walther was an Associate Professor of Cell Biology in the Yale School of Medicine. Jason E. Bond is a professor of biology and director of the Biodiversity Learning Center at Auburn University.  When he was an associate professor with the Department of Biology at East Carolina University, he discovered the spider "Myrmekiaphila neilyoungi" and numerous other species in the genus "Aptostichus".  He went to undergraduate school at Western Carolina University, majoring in biology in 1993.  He then went to receive his M.S. in Biology (1995) and Ph.D. in Evolutionary Systematics and Genetics (1999) from Virginia Tech.
Answer: Neuroscience