Widal test is to diagnose

Explain briefly any three methods used to diagnose cancer.

When an apparently healthy person is diagnosed as unhealthy by a psychiatrist, the reason could be that:

Widal test is carried out to test

Widal test is used for the diagonis of

Which test is employed to diagnose cervix cancer?

Which tests are performed to diagnose AIDS?

Pap's test is performed to diagnose cervix

Biotechnological techniques can help to diagnose the pathogen much before the symptoms of the disease appear in the patient. Suggest any two such techniques.