piece of bread with mold aspergillus fumigatus in a petri dish on a blue background. organic, medical research. the texture of

allergen allergy aspergillus bad biology bread closeup colony culture degradation disease disgusting dish education food fumigatus fungal fungus growing hazardous laboratory macro medical medicine microbe microbiology microorganism mold moldy mycelium organism penicillin petri piece poisonous product rotten rotting sample science spore stale toxic tweezers unpleasant unsanitary