male laboratory assistant examining biomaterial samples in a microscope. cllose up hands in blue rubber gloves adjust microscope

adjust analysis analyzing assistant background bacterium biochemistry biology biomaterial biotechnology blue care chemical chemist chemistry clinic cllose closeup cytology discovery doctor equipment examining experiment glass glove gloves hand hands health hospital industry instrument investigation lab laboratory lens male man medical medicine microbiology microscope microscopy optic optical pharmaceutical pharmacy professional research researcher rubber sample samples science scientific scientist technician technology test tool virus