The disease mechanism of enterotoxigenic E. coli closely resembles that of
A) Vibrio cholerae. B) Salmonella typhi.
C) Shigella spp. D) Campylobacter jejuni.
Question 2
A rectal swab from a 58-year-old male is submitted for culture for Neisseria gonorrhoeae. A gray, opaque oxidase positive colony grew on the chocolate and Thayer-Martin agar.
The gram-negative diplococcus was weak glucose positive with the CTA carbohydrate tubes. This organism should be
A) identified as N. gonorrhoeae. B) identified as N. cinerea.
C) ignored and reported as normal flora. D) tested for colistin susceptibility.
Tumor marker analysis of a patient undergoing therapy, who (1) after surgery had residual disease ...
Mechanism for the reaction catalyzed by thymidylate synthase
The E. coli replisome
Excision repair of thymine dimers by the UvrABC excinuclease of E. coli
Loss of brain cells in a transgenic Huntington-disease mouse. (a) Section of normal mouse-brain stri