Biotecnólogo en máscara médica y guantes de látex trabajando con tubos de ensayo en laboratorio, pancarta - Foto e imagen de stock

A portrait of a young surgeon chemist doctor looks at a container with a blue liquid and a mask is fought with viruses and a vaccine for vaccines against diseases.

Testing chemical reactions. Cropped portrait of a handsome young male scientist working in his lab

Middle age grey-haired man wearing scientist uniform using syringe at laboratory

Young female scientist with big syringe dripping into test tube in medical lab, copy space, blurred background