Mark Sfeir
Senior Research Technician at Virginia Commonwealth University School of Medicine- Claim this Profile
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Bio
John Wambaugh
The questions Mark asks can be hard to answer but lead to progress. Mark and I have worked together for two years while he has been a post-baccalaureate fellow researching at the US EPA Office of Research and Development. He never hesitates to dive into a research paper to gain a better understanding of the problem before him. Mark Sfeir approaches problems from unusual angles, leading to unexpected results.
John Wambaugh
The questions Mark asks can be hard to answer but lead to progress. Mark and I have worked together for two years while he has been a post-baccalaureate fellow researching at the US EPA Office of Research and Development. He never hesitates to dive into a research paper to gain a better understanding of the problem before him. Mark Sfeir approaches problems from unusual angles, leading to unexpected results.
John Wambaugh
The questions Mark asks can be hard to answer but lead to progress. Mark and I have worked together for two years while he has been a post-baccalaureate fellow researching at the US EPA Office of Research and Development. He never hesitates to dive into a research paper to gain a better understanding of the problem before him. Mark Sfeir approaches problems from unusual angles, leading to unexpected results.
John Wambaugh
The questions Mark asks can be hard to answer but lead to progress. Mark and I have worked together for two years while he has been a post-baccalaureate fellow researching at the US EPA Office of Research and Development. He never hesitates to dive into a research paper to gain a better understanding of the problem before him. Mark Sfeir approaches problems from unusual angles, leading to unexpected results.
Experience
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Virginia Commonwealth University School of Medicine
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United States
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Higher Education
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200 - 300 Employee
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Senior Research Technician
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Apr 2023 - Present
Performs cell culture (primary human lung fibroblasts), protein analysis (e.g. Western blot), and ELISA to support research aims in molecular biology. Coordinates with graduate/post-graduate students to understand experimental needs, frameworks, treatments, and goals. Assists with management of different experimental mouse colonies by performing surgery, tissue biopsy, arranging breeding, weaning, drug administration (IP/subQ injection), and addressing health concerns to support humane outcomes and institutional compliance. Operates radiation dosing platforms (CIXD and SARRP) for use with primary cell lines and mice. Processes human patient samples (blood and exhaled breath condensate) for biobanking. Maintains laboratory systems and supplies in working order for day-to-day activities. Show less
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University of North Carolina at Chapel Hill
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United States
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Higher Education
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700 & Above Employee
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Research Technician
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Nov 2021 - Mar 2023
Conducts quantitative trait locus analysis of Diversity Outbred mouse data to relate genetic factors to cancer, obesity, and nutrition using the qtl2 package in the R statistical programming language. Responsible for mouse husbandry and genotyping with PCR and gel electrophoresis to support study aims. Trains in cell culture and qPCR. Conducts quantitative trait locus analysis of Diversity Outbred mouse data to relate genetic factors to cancer, obesity, and nutrition using the qtl2 package in the R statistical programming language. Responsible for mouse husbandry and genotyping with PCR and gel electrophoresis to support study aims. Trains in cell culture and qPCR.
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Oak Ridge Institute for Science and Education
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United States
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Government Administration
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200 - 300 Employee
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Research Fellow in High-Throughput Toxicokinetics at US EPA
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Feb 2019 - Feb 2021
On John Wambaugh's team at the EPA in Research Triangle Park, NC, I implemented, tested, and documented new models and features in the open-source High-Throughput Toxicokinetics (httk) R package, maintaining version control with Git and coordinating programming needs using Confluence and Jira. Toward new functionality and exposure estimates in httk, I transformed datasets, including LC-MS analyses of hundreds of chemicals' behaviors in relation to different in vitro exposure metrics. My readings in primary literature informed changes to TK models that in turn inform regulation. Show less
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Oak Ridge Institute for Science and Education
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United States
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Government Administration
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200 - 300 Employee
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Research Fellow in Thyroid Toxicology
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Aug 2017 - Aug 2018
On Hisham El-Masri's team at the EPA in Research Triangle Park, NC, I implemented and tested physiologically-based toxicokinetic (PBTK) models of maternofetal distribution of perchlorate and thyroid hormones during pregnancy. On Hisham El-Masri's team at the EPA in Research Triangle Park, NC, I implemented and tested physiologically-based toxicokinetic (PBTK) models of maternofetal distribution of perchlorate and thyroid hormones during pregnancy.
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Scribe Services LLC
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Emergency Room at Winchester Medical Center in Winchester, VA
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Medical Scribe
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Jan 2015 - Aug 2016
Assisted two main ER doctors at Winchester Medical Center with managing patient information. Assisted two main ER doctors at Winchester Medical Center with managing patient information.
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Mover Dudes, Inc.
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United States
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Truck Transportation
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1 - 100 Employee
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Moving Staff
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Jun 2013 - Aug 2013
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Education
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2012 - 2017
William & Mary
Bachelor of Science (BS), Computational and Applied Mathematics
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