Question 6 Antigen presenting cells (APC): a. Are not in lymph nodes b. Can phagocytose pathogens for presentation purposes C. Do not present antigen to T cells d. Do not express MHC molecules

The correct answer is:<br /><br />b. Can phagocytose pathogens for presentation purposes<br /><br />Antigen-presenting cells (APC) are crucial in the immune response. They can phagocytose pathogens, process them, and present the antigens on their surface using MHC molecules to T cells. This initiates the adaptive immune response.