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

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