Microbial colony. Virus in living cells. Reproduction of microorganisms, germs and viruses. Immunity of a person. Viral infection attacks the human body. 3D colorful illustration on microbiology Shutterstock Image - Microbial colony. Virus in living cells. Reproduction of microorganisms, germs and viruses. Immunity of a person. Viral infection attacks the human body. 3D colorful illustration on microbiology - ID: 1185342892