backgrounds of penicillium, ascomycetous in petri dish for well as food and drug production.

abstract agar allergy antibiotic ascomycetous background bacteria biology bioremediation bread cells closeup colonies corrosion dish drug drugs environment food fungal fungi fungus green growing growth health hygiene hyphae infectious laboratory like macro medicine microbes microbial microbiology mildew mold mould mycelium mycology mycosis natural nature old pencil penicillin penicillium plate rotting science scientific spore spores texture white