structure of mucor mold, black fungus, bread mold fungi

mold mucor fungus mucormycosis illustration medicine microbe brain microbial nasal microorganism microscopic immune deficiency skin mycology infection complication respiratory treatment sarscov2 sporangium human science fungal disease sinus covid19 sinusitis closeup inflammation sporangiophore rhinocerebral medical pulmonary macro black mycosis bread allergic fungi structure morphology spores hypha mycelium microscope 3d plain background