the scientist is holding petri dish plate with malt extract agar use for growth media to isolate and cultivate yeasts, molds fungi

agar allergy anaerobic antibiotic ascomycetous aseptic aspergillus background bacteria biology colonies colony corona cultivate culture dirty disease dish enterovirus escherichia extract fungal fungi fungus gram growth health healthcare holding infection infectious isolate isolated lab laboratory malt media medical medicine microbes microbial microbiology mold molds mould mycelium nature negative niger penicillin penicillium petri plate research science scientific scientist species spores test testing use virus yeasts