The Presence of Yellow Colonies on Thiosulfate-Citrate-Bile Salt-Sucrose Medium Is

Question

The presence of yellow colonies on thiosulfate-citrate-bile salt-sucrose medium is suggestive of
A) Aeromonas hydrophila.
B) Vibrio cholerae.
C) Yersinia enterocolitica.
D) Shigella sp.

Accepted Answer

Thiosulfate-citrate-bile salt-sucrose (TCBS) agar is a selective and differential medium used to isolate Vibrio species. Yellow colonies on TCBS agar indicate the fermentation of sucrose, which is characteristic of Vibrio cholerae.