- (A) Growing bacteria in adverse environment
- (B) Growing bacteria in unconventional host
- (C) Serial passage in an experimental host
- (D) Repeated cultures in artificial media
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- (A) B-cells
- (B) Active T cells
- (C) NK cells
- (D) Plasma cells
- (A) Type I
- (B) Type II
- (C) Type III
- (D) Type IV
- (A) Helper T cells
- (B) Helper B cells
- (C) Monocytes
- (D) Macrophages
- (A) MHC I
- (B) MHC II
- (C) MHC III
- (D) B-cell receptor
- (A) Payers patch
- (B) Lymph node
- (C) Thymus
- (D) Busra of Fabricius
- (A) Region I
- (B) Region II
- (C) Region III
- (D) Boivin antigen
- (A) Brucella
- (B) Mycobacterium
- (C) Salmonella
- (D) Coxiella burnetti
- (A) Liquid paraffin → Dry heat
- (B) Glass syringes → Boiling at 169°C for 60 min
- (C) Flash pasteurization of milk → 72° C for 15 seconds, followed quickly by rapid cooling to 13°C for lower
- (D) Vaccines → Ethylene oxide
- (A) Autoclaving
- (B) Hot air oven
- (C) Inspissation
- (D) Tyndallization

