Which marker is highly specific for hairy-cell leukemia?
A. CD19
B. CD20
C. CD25
D. CD 103
Ans: D. CD 103
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Use the phylogenetic tree below to answer the following question(s).
Which of the following statement is correct regarding the phylogenetic tree above?
A. The polar bear and the brown bear are the most recently evolved species. B. The sun bear's closest relative is the sloth bear. C. Most bears on the phylogenetic tree are extinct. D. The American black bear has no closely related species.
A virus infects a host cell and takes over the host's mechanisms of replication and __________ synthesis. Fill in the blank(s) with the appropriate word(s)
All of the following are examples of epigenetic changes except
A. microbial mucinase digests the protective lining of mucous membranes. B. microbe binds to small RNAs disrupting gene regulation. C. host cell genome is altered, interrupting transcription. D. histones are altered, which affects replication and transcription.
The Florida panther, as an appealing symbol of Florida's conservation campaign, serves as a(n)
A. keystone species. B. endemic species. C. umbrella species. D. flagship species. E. indicator species.