a white blood cell with a granular surface surrounded by many smooth red blood cells

allergy antibiotic ascomycetous attack background bacteria biology cells closeup colonies colony culture disease drug fungus health hyphae illness life macro medicine micro microbes microbial microbiology microscope mildew mold mould mushroom mycelium mycology nature penicillin penicillium plate research science scientific spore spores test white blood cell granular surface surrounded smooth red care concept