Streptomycin and related antibiotics bind to small subunits of ribosomes in prokaryotes and they:

Into how many main types are diseases classified?

$A$ large bean-shaped organ that contains lymphocytes and phagocytes is:

Which of the following established the scientific basis of vaccination?

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.

Identify the odd one out from the following options.