Which type of arboviral encephalitis was introduced to the United States in 1999 and is maintained in a bird-mosquito-bird cycle?

a) Eastern equine encephalitis
b) Japanese encephalitis
c) West Nile virus
d) California encephalitis


Ans: c) West Nile virus

Biology & Microbiology

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HIV affects

a. the human reproductive system. b. the human circulatory system. c. the human respiratory system. d. the human immune system. e. the human digestive system

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In humans, assume that the allele for brown eyes is dominant and the allele for blue eyes is recessive

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Cancer cells are different from other cells in that they have lost their "contact inhibition." Contact inhibition means:

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