Which of the following are diagnostic characteristics of Listeria?

This cause of amoebic dysentery, shown above ingesting a red blood cell, has a trophozoite form with a single nucleus and a cyst form with 1-4 nuclei and small, centrally placed karyosomes.  (19.3)

Which organism causes the plague?  (7.16)

Which hepatitis virus is NOT associated with either a carrier state or chronic hepatitis?  (18.5)

Lancefield separated the Streptococcus species based on:  (5.3)

Which coagulase-negative Staphylococcus species is the most resistant to novobiocin?  (4.10)

Which of the following IMVC results corresponds to Escherichia coli? (7.7)

Vibrio spp.  (8.2)

Given the following information, identify the most likely organism. (4.10, 5.20, 7.17) BAP swarming; Mac 2+ large NLF, Gram negative rod, oxidase negative, TSI- A/A with H2S, LIA- Red/Yellow with H2S, Urease positive, MIO + + =

A child with frequent diarrhea over several years has suffered a rectal prolapse. A fecal wet mount discovers the following. What is the parasite?  (19.3)