Type I hypersensitivity is mediated by which of the following immunoglobulins ? A. IgA B. IgG C. IgMD. IgE

Active artificial immunization is induced by the administration of all of the following EXCEPT______________? A. Bacterial products B. Toxoids C. VaccinesD. Antitoxins

Immunity that is conferred to the foetus by transfer of IgG and IgA antibodies is called as______________? A. Active acquired immunity B. Passive acquired immunity C. Natural active immunityD. Passive natural immunity

The protective effects breast milk are known to be associated with______________? A. IgM antibodies B. Lysozyme C. Mast cellsD. IgA antibodies

IL-1 and TNF a during inflammation are secreted by______________? A. Plasma cellsB. Activated macrophages C. Lymphocytes D. Platelet

Virus infected cell is killed by________________? A. Interferons B. Macrophages C. Neutrophils D. Autolysis

Prozone phenomenon is due to______________? A. Disproportionate antigen antibody levels B. Excess antigenC. Excess antibody D. Hyper immune reaction

Most sensitive test for antigen detection is_______________? A. Radioimmuno Assay B. ELISA C. Immunoflourescence D. Passive hemaglutination

Complement binding immunoglobin via the classical pathway is_______________? A. IgG & igM B. IgG & IgA C. IgG & IgD D. IgD & IgE

Function of Ig A is________________? A. Acts as a mucosal barrier for infection B. Circulating antibody C. Kills virus infected cells D. Activates macrophages