colonies of yeasts, molds, fungal testing in clinical samples, malt extract agar in petri dish using for growth media to isolate

agar air alcohol anaerobic aseptic autoclave background bacteria biology bright clinical closeup colonies colony conkey contaminated corona counter cultivate culture disease dish ecoli enterovirus environmental experiment extract food fungal fungi glass gram growth health infection inflection investigation isolate isolated lab laboratory light mac malt media medical medicine methylene microbiology molds negative petri plate red research room samples science selective species spread technique test testing using virus yeasts