Question

multiple choice question
antigen presentation is the display of an antigen on a cells _.
plasma membrane
nucleus
nucleolus
ribosomes

Explanation:

Antigen - presenting cells display antigens on their plasma membrane to activate immune cells. The nucleus contains genetic material, the nucleolus is involved in ribosome synthesis, and ribosomes are sites of protein synthesis. None of these are the site for antigen presentation.

Answer:

plasma membrane