Activation of cytotoxic T cells requires binding to class I MHC molecule complexed with a foreign antigen and the release of ________ from ________.
A) interleukin-1 : helper T cells
B) interleukin-2 : helper T cells
C) interleukin-10 : macrophages
D) interleukin-2 : macrophages
E) interleukin-1 : macrophages
Ans: B) interleukin-2 : helper T cells
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A) the lack of adequate, integrated political economic structures and systems. B) population growth. C) absurd reliance on fossil fuels. D) disruptive involvement of NGOs.
The principle of plasmid fingerprinting is that microbial isolates of the same strain contain the same plasmids.
Answer the following statement true (T) or false (F)
An organism that lives on dead organic matter is known as a
A. commensal organism. B. saprophyte. C. parasite. D. None of the above is correct.
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Answer the following statement true (T) or false (F)