Lymph glands and nodes help to

Against which of the following does interferon act?

Which is the main physical barrier in our body?

Consider the following four statements $(i-iv)$ regarding kidney transplantation and select the two correct ones.
$(i)$ Even if a kidney transplant is successful,the recipient needs to take immunosuppressants for a long time.
$(ii)$ Cell-mediated immune response is responsible for the rejection of the graft.
$(iii)$ $B$-lymphocytes are responsible for the rejection of the graft.
$(iv)$ The acceptance or rejection of a transplanted kidney depends on specific interferons.

An antiviral chemical produced by the animal cell is

Small proteins produced by vertebrate cells in response to viral infection,which inhibit further viral multiplication,are known as.............