Cytotoxic T cells are able to recognize infected body cells becau...

Question

Cytotoxic T cells are able to recognize infected body cells because
a. the infected cells display foreign antigens.
b. the infected cells produce antigens.
c. infected cells release antibodies into the blood.
d. helper T cells destroy them first.

Accepted Answer

Hi everyone. Let's look at our next question. It says which of the following cells is not a canonical antigen presenting cell? Well let's recall from our content videos. Um The antigen presenting cells are cells of the immune system and there's kind of three um types that we think of right away. These are the cells that present antigens with those MHC two proteins and those are listed here as choice B. Dendritic cells, Choice C. B. Cells and Choice D. Macrophages. Um So we can just eliminate those three because we're looking for the one that is not an antigen presenting cell. So we are left with endothelial cells and endothelial cells are not part of the immune system. They don't present antigens. Uh Endothelial cells are the cells that line the blood and lymph vessels in the heart. Uh They form a single layer that regulates the exchanges between the bloodstream and the surrounding tissues. So Choice A. And epithelial cells will be our answer for which the following cells is not a canonical antigen presenting cell. See you in the next video

Cytotoxic T cells are able to recognize infected body cells because a. the infected cells display foreign antigens. b. the infected cells produce antigens. c. infected cells release antibodies into the blood. d. helper T cells destroy them first.

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