HY Concept 179

[tommyk]

Differentiate NK T-cells with cytotoxic T-cells!!! It is things like this which keep students from passing!

[tommyk]

NK, or natural killer cells specialize in killing virus infected cells and cancer cells but unlike cytotoxic T cells, THEY ARE ACTIVE WITHOUT PRIOR EXPOSURE TO THE VIRUS, ARE NOT REVVVEEED UP BY CONTACT, AND ARE NOT SPECIFIC!

AND, THEY DO NOT HAVE TO PASS THRU THE THYMUS TO MATURE.

(You DO know the cytotoxic T-cells have a receptor, NK's don't!)

(NK's don't need MHC to act)

Since NKs activated by IL-2 are being used in cancer research, is there any wonder that what I JUST WROTE WILL BE ON YOUR TEST?!