Eosin Methylene Blue (EMB) Agar: is a selective AND a differential medium. The selective components are the eosin and methylene blue dyes that inhibit the growth of Gram-positive bacteria and ...

The purpose of this practical is to investigate the effect of antiseptics or antibiotics on bacterial growth using agar plates and measuring zones of inhibition. This allows the selected bacteria ...

After filling in the outline with bacteria that express different pigments as they grow, she incubates them until the microbes pack the plate, revealing the bookish images. To mimic the background ...

The selective ingredients are the bile salts and the dye, crystal violet which inhibit the growth of Gram-positive bacteria ... form bright pinky-red colonies (plate pictured on the left here).