bacteria staphylococcus aureus, 3d

mrsa microscopic diarrhea microbes spherical toxin microorganisms pus sepsis purulent cocci staphylococci sick bacteriemia epidemic closeup pyogenic superbug factor pathology macro cells surgical staphylococcus 3d illustration sickness infection microscope scientific human shapes science medicine disease biology medical bacteria microbiology fever colony colonies hemolysis hemolytic sheep blood agar medium