১.
A positive tuberculin test signifies which type of immunity?
সঠিক উত্তর: ক
ক) T-cell mediated
উত্তর
সঠিক উত্তর: ক
ক) T-cell mediated
ব্যাখ্যা
Explanation: A positive tuberculin test signifies T-cell–mediated immunity to mycobacterial antigens but does not differentiate between infection and active disease.