168. is responsible for graft rejection : (1) Antibody mediated immunity (2) Cell mediated immunity (3) Innate immunity (4) Herd immunity 169. The principle of vaccination is based on which property of immune system? (1) Diversity (3) Memory (2) Specificity (4) Non-specificity 170. Which antibody, is present in yellowish fluid colustrum? (1) IgG (2) IgD (3) IgM (4) IgA 171. (i) Bouts of fever (ii) Diarrhoea (iii) Weight loss (iv) Prolonged cough Above given symptoms may be indicative of which viral disease :- (1) Tuberculosis (3) Measles 172. AIDS is not a :- (1) Viral disease (2) STD (2) Cholera (4) AIDS (3) Immuno deficiencey disease (4) Congenital disease