‘Pathogens' were discovered by
Edward Jenner
William Harvey
Pasteur
Robert Koch
In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.
$(a)$ Fill in $(A)$ and $(B)$
$(b)$ Why is the virus called retrovirus ?
$(c)$ Can the infected cell survive while viruses are being replicated and released ?
Ascariasis is caused by an endo parasite of human $...A...$ commonly called $...B...$ Here $A$ and $B$ refers to
Widal test is used for the diagnosis of
Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with
Who among the following established the scientific basis of vaccination?