Which of the following birth control measure can be considered as the safest?

Study of mode of transmission of diseases is called

A localized inflammatory response appears at the site of infection causes redness, swelling, pain and heat due to certain chemical, they are

Antivenom is used for the treatment of snake bite. The treatment of snake bite by antivenom is an example of

Just as Xenopsylla is to Yersinia pestis, so is:

Which one of the following statements is correct with respect to immunity?

A person likely to develop tetanus is immunized by administering

Match column I with column II and choose the correct answer from the options given below.

Assertion: The phenomenon where tumour cells detach and migrate to other parts of the body where they give rise to secondary tumours is called Metastasis.

Reason: Abnormal antigens on the surface of cell and unusual number of chromosomes cause Metastasis.

The correct answer is

Assertion: LSD and marijuana are clinically used as analgesics.

Reason: Both these drugs suppress brain function.