colonies of different bacteria and mold fungi grown on petri dish with nutrient agar

agar air allergy aspergillus background bacteria bacteriology brown coccus colonies colony dish environment environmental fungi glove growth hand indoor isolated medium micro microbe microbiology micrococcus microorganism microscope microscopic microworld mold morphology nutrient pathogen pathogenic penicillium petri plate research researcher scientist shape smear soy spherical staphylococcus surface tryptic tsa white world yellow