Lab Members

Paul Bollyky, MD, D.Phil   Dr. Bollyky is an Associate Professor in the School of Medicine Division of Infectious Diseases, the Department of Microbiology and Immunology, and the Stanford Immunology Program. He received his BA from Columbia, his D.Phil from Oxford, and his MD from Harvard.   He was a medical resident at Brigham and Women’s Hospital, and an Infectious Disease Fellow at the University of Washington prior to joining the Stanford faculty in 2013.


Elizabeth Burgener, MD -2016 Liz is an MD and pediatric pulmonology fellow who is interested in pseudomonas and Cystic Fibrosis. Liz is studying how Pf phage contribute to the disease burden in CF. She uses qPCR to correlate sputum phage counts with clinical outcomes in CF. Liz’s research is supported by a Cystic Fibrosis Foundation Vertex Award & a Parker B Francis Fellowship.

Kevin Chen, PhD – 2019 Kevin received his PhD at Texas A&M University Health Science Center, where he studied combinational antimicrobial therapy against drug resistant bacteria, particularly P. aeruginosa, in cystic fibrosis patients. During his PhD, Kevin became interested in phage therapy against P. aeruginosa. Kevin works on how Pf phages contribute to antibiotic resistance in P. aeruginosa

Sally Demirdjian, PhD – 2020 Sally completed her PhD in Microbiology and Immunology at Dartmouth. Her graduate research focused on host-pathogen interactions, specifically determinants for phagocytosis and clearance of Pseudomonas. She is interested in developing novel monoclonal antibodies for the treatment of autoimmune diseases and P. aeruginosa infections.

Jen Sequoia, MD, PhD – 2020 Jen is a pediatric resident at Stanford who is interested in how bacteriophage impact human pregnancy.  She is co-mentored by Virginia Winn.  Prior to starting residency, Jen completed her MD and PhD at the University of Chicago where she studied the epigenetic regulation of early lymphocyte development.

Nina Pennetzdorfer, PhD – 2020 Nina completed her PhD in Molecular Microbiology at Graz University. She studied regulated proteolysis events in Vibrio cholerae and the impact on membrane composition. She is interested in how Pf phage impact host-pathogen mechanisms and molecular interactions between phage and Pseudomonas as a bacterial host.

Arya Khosravi, MD, PhD – 2020 Arya is a Clinical Infectious Diseases Fellow studying immunology and bacteriophages in the lab. He completed his residency at UCLA and attended Medical School at USC Keck School of Medicine. 

Maryam Hajfathalian – 2021 Maryam is a visiting scholar from the University of Pennsylvania, Radiology. We are looking forward to applying her knowledge of nanoparticles, therapeutics, and imaging to treating Pseudomonas biofilms and wound infections.


Nadine Nagy – 2014 Nadine  finished her postdoctoral research at Benaroya Research Institute and then moved to join the Bollyky lab.  Her research is focused on the role of hyaluronan during development and progression of type 1 diabetes (T1D).  She is helping to develop the drug 4-MU for clinical trials.

Gernot Kaber – 2014 Gernot has joined the Bollyky lab after a working  for the Benaroya Research Institute.   Gernot is involved in practically every ongoing research project in the Bollyky lab, because he knows how to do EVERYTHING.


Aviv Hargil – 2019 Aviv graduated from University of Chicago. He takes care of the vivarium and  genotyping. He  is involved in projects related to 4Mu development. Aviv is interested in a variety of biological topics and is excited to learn more about immunology in the Bollyky lab.


Graham Barlow – 2017 Graham is a PhD candidate in the Immunology program. He is co-mentored by Garry Nolan and is working on the using high-dimensional imaging to study how cells coordinate in their native tissue contexts. He is especially interested in tissue architecture and how this organization induces and breaks tolerance, especially over time.

Medeea Popescu – 2018 Medeea is a PhD candidate in the Immunology program at Stanford University School of Medicine. She is co-mentored by Steve Quake and is working to understand how Pf phage impact human immunology in the context of Pseudomonas aeruginosa infection.

Tejas Dharmaraj – 2019 Tejas is a first year student in the MD-PhD program. Before coming to Stanford, he studied nuclear structural proteins with Katherine Wilson at John Hopkins. Tejas is interested in the intracellular functions and biophysical properties of filamentous bacteriophages.

Julie Pourtois – 2020. is a PhD candidate in the Biology department. She is co-advised by Giulio De Leo at the Hopkins Marine Station and she studies phage-bacteria ecological interactions in human and marine diseases. She is interested in developing mathematical models to test hypotheses and make predictions in complex systems.

Hunter Antonio Martinez – 2018 Hunter is a PhD candidate in the Immunology program. He hopes to gain insight on the role of CD44, a promiscuous transmembrane protein involved in cellular adhesion. The inputs CD44 relays to a T cell at various stages of an immunological campaign has ramifications for both immunometabolism as well potential therapeutic interest.

Naomi Lynn Haddock – 2018 Naomi Haddock is a graduate student in the Immunology Program at the Stanford University School of Medicine. Naomi is interested in using both experimental and computational techniques in infectious disease immunology research. Her work focuses on the circulating and pulmonary phageome in Cystic Fibrosis.


Tony Chang – 2021 Tony is majoring in Biology and is specifically on the Microbes and Immunity track. He is interested in learning about wound healing and the immune response to wound infections.

Sammy Pickell – 2021 Sammy is majoring in Human Biology and in lab is studying the impact of phages on wound healing. Along with being a whiz in lab she is on the Stanford Sailing Team.

Maya Somers – 2021 Maya is majoring in Human Biology and will be helping Dr. Burgener with her projects using qPCR to study Pf phage in Cystic Fibrosis.

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