I streaked pure culture on three different media : Mannitol Salt Agar (MSA), Malt Extract Agar (MEA) and Potato Dextrose Agar (PDA) media. There are colonies of bacteria grow on MSA, slightly grow of microorganisms on MEA and no grow on PDA. So, is there probability of other microorganism grow on MEA plate even though there are grow on MSA media. Because this is pure culture. Thank you.