A not-so-simple sample by Matthew Modoono June 6, 2019 Share Facebook LinkedIn Twitter Graduate student Mintesinot Kassu and Karissa Carter an REU student from Norfolk State University prepare samples for thin layer chromatography analysis in Hurtig Hall on June 6, 2019. Photo by Matthew Modoono/Northeastern University Northeastern graduate student Mintesinot Kassu and Karissa Carter from Norfolk State University prepare samples for thin layer chromatography analysis in Hurtig Hall. Photo by Matthew Modoono/Northeastern University