A gram-positive bacillus, which grew on Tinsdale agar, is esculin hydrolysis–negative, urease-positive, and nonlipophilic. The organism can be identified as:
a. C. diphtheria.
b. Corynebacterium glucuronolyticum.
c. Corynebacterium xerosis.
d. Corynebacterium ulcerans.
D
C. ulcerans is esculin hydrolysis–negative, urease-positive, and nonlipophilic. The other species are all urease negative.
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Indicate whether the statement is true or false
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A) induce antibody formation by phagocytic cells. B) help trigger the inflammatory response. C) are released by natural killer cells to attack cancer and virus-infected cells. D) replace T cells in the cell-mediated response.