Női kémikus tabletta számítógép ellenőrzése laboratóriumi vizsgálati csövek - Stock felvétel és videó

Medical research scientists in laboratory looking through a microscope.

Female scientist mixing chemicals in erlenmeyer flask

Chemical experiments for children. Fun experiments for children. A woman conducts cognitive science lessons. Drop of dye from the pipette falls into a flask of clear water. Preparation of liquid for

Female scientist mixing chemicals in erlenmeyer flask

Female chemist looking at test tube with chemicals

Scientist mixing chemicals in test tube with stirring rod and writing notes

Female scientist mixing red and yellow chemicals in erlenmeyer flask

Female chemist hands using tablet computer in laboratory

Female scientist comparing test tubes with red and blue fluid substance