The immune system which works against self is

$A$ patient rejects a transplanted kidney because of ..........

Transplantation of tissues or organs often fails because the patient's body rejects them. Which type of immune response is responsible for this rejection?

Assertion $A$: Acquired immunity is pathogen-specific. Reason $R$: Acquired immunity is characterized by memory. Which option is correct for Assertion $A$ and Reason $R$?

Vaccination provides protection to an individual against a disease because it.........

What is an anamnestic response?