A bone marrow transplant is an example of a stem cell therapy using adult stem cells
a. True
b. False
Indicate whether the statement is true or false
True
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Uropathogenic E. coli can use all the following virulence factors to establish infection in the urinary tract except
A) proteases and toxins. B) antigen mimicry. C) pili and adhesions. D) siderophores. E) invade bladder cells to become intracellular.
DNA supercoils that result from overwinding produce ____ supercoils
Fill in the blank with the appropriate word.
Growth factors cannot by synthesized by the bacteria that use them and include amino acids, pyrimidines, and vitamins.
Answer the following statement true (T) or false (F)
Tail cocking behavior in whales is thought to be for
a. killing prey. b. attracting mates. c. aggression. d. preparation for a dive. e. dislodging parasites.