All Types of Immune Responses are Based Upon ___________

Question

All types of immune responses are based upon ___________.
A)body mass
B)the pH and salt concentration in blood
C)the presence of viruses
D)the body's ability to distinguish between materials that are supposed to be there (self)and those that are foreign (nonself)

Accepted Answer

All types of immune responses are based upon the body's ability to distinguish between materials that are supposed to be there (self) and those that are foreign (nonself). This ability allows the immune system to target and eliminate any foreign substances, including pathogens and cancer cells, while leaving the body's own tissues unharmed.