Leitender bärtiger Wissenschaftler im weißen Kittel denkt nach und betrachtet Röhre mit Reagenz im Chemielabor - Stockfoto & -bild

Serious middle aged male doctor using laptop at table in office

Senior scientist using his tablet computer at work

Confident elderly veterinarian with stethoscope on neck looking at camera, holding folder and posing. Owner of malamute dog and african assistant stroking big animal.

Male doctor writes notes on the clipboard in the hospital.

Medical professionals with patients in hospital

Doctors at the meeting, sitting on the desk.