An elderly Caucasian male chemist in a protective suit writes on glass.
Palabras clave
elderly,
caucasian,
male,
chemist,
protective,
suit,
glasses,
old,
man,
mature,
grey hair,
chemistry,
biotechnology,
chemical,
analysing,
analysis,
biology,
make well,
clinic,
doctor,
disease,
discovery,
epidemic,
equipment,
experiment,
goggles,
pharmaceutical,
expertise,
researcher,
laboratory,
biochemistry,
professional,
test,
health,
microbiology,
flask,
bulb,
armoring,
science,
treatment,
sterile,
vaccine,
scientist,
formula,
microscope,
sample,
infection,
pharmacy,
examining
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