Ragazzo felice indicando vaso con sostanza bianca vicino ragazza offuscata con provette - Foto e immagini stock

Appropriate reagent. Cheerful jolly pleasant boy taking vial while grinning and wearing lab coat

Best worker. Selective focus of vials filled with liquid while boys hand stretching to them

Happy preteen kids in white coats looking at camera near microscope and test tubes with flasks

Little helper. Glad vigorous appealing boy holding stand with vials while gazing at camera and wearing lab coat

Pupils in protective goggles holding beakers during chemistry lesson

Funny science. Cute jolly gay girl working with liquid while posing at lab and grinning

Ill african american scientist holing napkin near medical equipment and colleague

Scientist picking up blood sample in electronic pipette in lab

Scientist in goggles holding electronic pipette near african american colleague with clipboard and test tubes

Side view of scientist in white coat looking at test tube near medical equipment

African american scientist in medical mask and latex gloves holding blurred pipette in laboratory

Scientist in latex gloves and medical mask writing in notebook near test tubes and microscope

Side view of african american scientist in medical mask holding flask near clipboard

Scientist smiling at camera near digital tablet and medical equipment in lab