Q. Select the correct statement with respect to diseases and immunisation : (a) Injection of snake antivenom against snake bite is an example of active immunisation. (b) If due to…
Q. Which one of the following acts as a physiological barrier preventing the entry of microorganisms in human body? (a) Epithelium of urogenital tract (b) Tears (c) Monocytes (d) Skin…
Q. A certain patient is suspected to be suffering from acquired immune deficiency syndrome. Which diagnostic technique will you recommend for its detection? (a) ELISA (b) MRI (c) Ultrasound (d)…
Q. At which stage of HIV infection does one usually show symptoms of AIDS? (a) When the infecting retrovirus enters host cell (b) When viral DNA is produced by reverse…