Doubting Asian student looks at tubes with materials sample through magnifier glass doing tests in scientific laboratory close view
laboratory assistant man is working with analysis and samples of chemicals, applying liquid from test tube in plate
Chemist in protective clothing pouring reagent into Petri dish, scientist running an experiment and doing research in laboratory
Chemist scientist african woman taking dna solution from test tube
Biologist scientist putting solution liquid in test tube
Group of scientists wearing lab coat working in laboratory while examining biochemistry sample in test tube and scientific instruments. Science technology research and development study concept
Serious male scientist is doing has research using test tube with liquid
Scientific Sports Laboratory: Cardiologist coming to monitor athlete's stress testing on treadmill. The displays in lab showing EKG data.
Doctor preparing sportsman in oxygen mask for cardio respiratory test by checking electrodees and mask connection in scientific sport laboratory.
Scientific Sports Laboratory: Two mixed race doctors discussing EKG data of athlete doing treadmill test. In the background there are skyscrapers.
Skilled scientist in protective gloves and shield adds dark blue liquid into flask with clear water doing experiment in medical lab closeup
Man research scientist looking at samples under microscope in modern equipped laboratory. Eldery doctor working with various bacteria, tissue and blood tests, pharmaceutical research for antibiotics