Pathogens and toxins can be manipulated to generate an immune response and memory even if a damaging infection is absent. * True False

One way in which an infectious agent can evade immune surveillance is by altering its antigens; this is particularly important for extracellular pathogens, against which the principal defense is the production of antibody against their surface structures. There are three ways in which antigenic variation can occur.

Explanation:

I'M TRYING MY BEST IF IT IS WRONG

answer; all of the above;