Muestras en tubos de ensayo largos colocados en un soporte sobre una mesa en laboratorio - Foto e imagen de stock

Test tubes in a rack,some of them containing colorful solutions.

A closeup shot of laboratory plastic tubes used for coronavirus research

Image of test tubes with colorful solutions are placed in a rack in a laboratory.

Close-up view of test tubes with wheat ears and green plants in soil on table in lab

Partial view of scientist working with test tubes, laboratory researcher concept

Close-up view of test tubes with chemical samples and wheat ears on table in laboratory

Close-up partial view of professional scientist making experiment with wheat ears in test tubes

Partial view of professional scientist working with reagent in laboratory

Partial view of scientist working with test tubes, laboratory researcher concept

Cropped shot of scientist pouring reagent into flask on electronic scales in chemical laboratory

Empty medical glass tubes for blood test at laboratory