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Doctor,a man washes his hands with a sanitizer,disinfection of hands in the doctor’s office,close-up.

Scientist analyse in bacteria culture. Closeup. Petri dish with Bacteria in chemical lab. Hand in blue glove holds petri dish with mold and bacterium colony. Science professional grafting bacteria.

Scientist in a laboratory analyzes sample to collect DNA and molecules. Researcher carrying out scientific research in a lab. analysis, dna, bio, microbiology, research, pharmaceutical medicine