MCQ
Cavity of graafian follicle is.
- AAntrum.
- BLiquor folliculi.
- CDiscus proligerous.
- DAll of these.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Reason : Injecting the microbes intentionally during immunisation or infectious organisms gaining access into body during natural infection induces active immunity.