What does Proteus Vulgaris look like on a TSA (tryptin-soy agar) plate?
Proteus swarms, leaving a very thin film of bacteria on the agar surface, but swarming periods are interspersed with periods when the cells stop and undergo a cycle of growth and division so the colony has a distinct zonation (think bulls-eye). Something else interesting… If your agar plate is enriched with urea, proteus degrades this into ammonia, changing the pH of the agar.
