Ryan asked: What is the basis of different colored colonies of an EMB agar and a MacConkey agar? For example, C.Freundii tested positive with a bright pink color in the Mac agar and positive with dark colonies in the EMB agar but P.vulgaris tested negative with no color in the Mac agar and positive with [...]
Posts under ‘Biology’
i have to find 2 unknown organisms and i’ve streaked it on a mac and hek plate?
pochacco630 asked: On the Maconkey plate, i saw red colonies and clear colonies and on the Hektoen plate i saw yellowish-orange colonies and colonies with black centers (H2S) production. But when i tried to isolate them on the Hek plate again, I cannot see growth from the black dotted colonies at all, while there was [...]