On Gram stain,which organism appears thin in the center and thicker at the ends?
A)Agrobacterium yellow group
B)CDC groups EO-3 and EO-4
C)E.meningoseptica
D)E.brevis

Question

Quizplus · Accepted Answer

Chryseobacterium spp. ,E.meningoseptica,and the CDC group IIb are medium-to-long straight rods and often appear as "II-forms" (i.e. ,cells that appear thin in the center and thicker at the ends).E.brevis varies in being short-to-long rods.Agrobacterium yellow group is slender,medium-to-long gram-negative rods.The CDC groups EO-3 and EO-4 are coccobacilli,and the CDC groups O-1,O-2,and O-3 are short gram-negative curved rods.

On Gram Stain,which Organism Appears Thin in the Center and Thicker