Human Health an...

At which stage of HIV infection does on usually show symptoms of AIDS?

HIV decreases natural immunity of the body by destroying 

Select the incorrect statement from following :-

Immunization builds up _______________.

__________ is the process of developing immunity or resistance against a particular disease

Select the incorrect statement:

An intestinal parasite which causes blockage of the intestinal passage and whose eggs are excreted along with the faces of infected person is____

The complement system is a defensive system which consists of over 30 plasma proteins. It function by 

The correct statement about active immunity is:

From which of the given plants is the drug whose skeletal structure given is extracted ?