Killer and Helper cells are part of_______________?
(A) B cells
(B) T cells
(C) Monocytes
(D) Macrophage
Endoscopes are sterilized by using_______________?
(A) Autoclaving
(B) Boiling
(C) Cidex
(D) Gamma radiation
Hot air oven is used for sterilization of all EXCEPT__________________?
(A) Glassware
(B) Rubber tubes
(C) Sharp instrument
(D) Liquid paraffin
Oil and Grease are sterilized by________________?
(A) Hot air oven
(B) Auto claving
(C) Irradiation
(D) Ethylene dioxide
Which of the following is true about pasteurization ?
(A) It kills bacteria and spores
(B) It kills all bacteria except thermoduric bacteria
(C) It kills 95% of microorganisms
(D) Tubercle bacilli are destroyed
Portion of immunoglobulin molecule with molecular weight to 50000_________________?
(A) Secretory piece
(B) H chain
(C) L chain
(D) J piece
Prozone phenomenon is due to______________?
(A) Disproportionate antigen antibody levels
(B) Excess antigen
(C) Excess antibody
(D) Hyper immune reaction
Virus infected cell is killed by________________?
(A) Interferons
(B) Macrophages
(C) Neutrophils
(D) Autolysis
IL-1 and TNF a during inflammation are secreted by______________?
(A) Plasma cells
(B) Activated macrophages
(C) Lymphocytes
(D) Platelet
The protective effects breast milk are known to be associated with______________?
(A) IgM antibodies
(B) Lysozyme
(C) Mast cells
(D) IgA antibodies