Químico sonriente en anteojos protectores sosteniendo tubo de ensayo con reactivo en laboratorio - Foto e imágenes de stock

Professional scientist in protective eyeglasses making experiment with reagents in test tubes

Woman researcher is surrounded by medical vials and flasks, isolated on white background.

Smiling woman scientist looking at the tube with the results of the analysis.photo with copy space

A medical or scientific researcher or doctor looking at a test tube of liquid green solution in a laboratory.

Innovative cure. Selective focus of a new medicine being held by a cheerful positive female scientist while working in the lab

Smiling bearded scientist in protective goggles and gloves holding test tubes with reagents and making experiment

Two adult scientists and little student making experiment in chemical lab

Bearded teacher holding flask while little student looking in microscope

Smiling bearded teacher and little student working with microscope and test tube in lab

Smiling bearded teacher and serious little student making experiment in lab

Smiling bearded teacher and serious little student making experiment in lab

Smiling professional scientist in protective glasses making experiment in lab

Side view of teacher and student working together in laboratory