Nowadays,the early diagnosis of bacterial or viral infections in humans is possible using:

$A$ compound which is produced by an organism and inhibits the growth of other organisms is called:

Good health results in:

What is the full form of $PMNL$?

Select the correct option to fill up the blanks.
$(i)$ Diseases which are easily transmitted from one person to another,are called $.....$ diseases.
$(ii)$ In human body,parasite of malaria initially multiplies within the $........$ and then attack the $......$
$(iii) ......$ is the yellowish fluid secreted by mother during the initial days of lactation.
$(iv) ......$ and $.......$ are the primary lymphoid organs.

Which of the following sets consists of vector hosts?