Antibodies fight against

The drug 'cyclosporin' used for organ transplant patients is obtained from a

Malaria is caused by

$A$ - Smoking is associated with increased incidence of cancer of lung

$R$ - It increase $CO$ content in blood and reduce the concentration of haembound oxygen

Tse-tse fly is a vector for sleeping sickness which transmits the infective stage of which of the following parasite

Large group of lymphoid tissue in respiratory, digestive and urogenital tract are collectively called