scientist holding test tube with chemical and bacterial liquid on white background.
Schlüsselwörter
analysing,
chemistry,
liquid,
research,
science,
scientist,
adult,
chemist,
doctor,
examining,
horizontal,
laboratory,
medicine,
one person,
photo,
protection,
virus,
working,
chemical,
male,
people,
tube,
danger,
holding,
man,
technology,
professional occupation,
test tube,
adults only,
one man only,
quality control,
analysis,
biology,
biotechnology,
blood,
check,
development,
elderly,
examine,
expertise,
exploration
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