open antique book with mold on its pages and close-up view of mold fungi stachybotrys

book stachybotrys old mold fungus allergen allergic allergy ancient antique biology black closeup cover dark dirty fungal fungi growth health house illness illustration library literature macro manuscript medieval microbial mould mycology mycosis page paper parchment philosophy poisonous read science scientific source spore formation spores study unhealthy 3d isolated