Professor with muscular dystrophy advising engineering students in chemistry laboratory working on x-ray fluorescence analyzers

horizontal teamwork gas industry science technology female women education man engineering medicine teaching learning working machine concentration student usa hunt engineer chemistry experiment lab laboratory advise advice discussion mark teacher research wheelchair examining cylinder explaining studying photography university females whites professor males disability massachusetts advising diabetes new england side view looking away north america science and technology lab coat full length rear view analyzing mid adult women young adult men middle aged adults mid adult indoors people men woman male color image three people young adult university student adults only group of people healthcare and medicine 25 30 years 20 25 years 55 60 years laboratory equipment scientific experiment middle aged men physical impairment person in education muscular dystrophy half length needham engineering professor stem education engineering school chemical analysis chemical analysis laboratory x ray fluorescence x ray fluorescence analyzer x ray fluorescence machine compressed gas cylinder x ray equipment