nocardia bacteria, 3d

abscesses actinomycetoma animals asteroides background bacterial bacteriology bacterium biology brasiliensis cells chronic closeup cutaneous epidemic foot grampositive granulomatus health human illness illustration infection infectious lesions madurae mastitis medical medicine microbe microbiology microorganism microscope microscopic mycetoma nocardia nocardiosis opportunistic pathogenic pathology pneumonia pulmonary science scientific sick sickness subcutaneous suppurative