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two plates growing bacteria in the presence of discs containing various antibiotics
ARP18A28_257

two plates growing bacteria in the presence of dis...

Female laboratory scientist looks for bacteria in milk
ARP17A23_456

Female laboratory scientist looks for bacteria in ...

Lazzaro Spallanzani
ARP07104_460001249

Lazzaro Spallanzani

Paul Ehrlich
ARP07094_390000549

Paul Ehrlich