aspergillus fumigatus mildew texture on bread bread. organic, medical research

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