The following virus can be grown only in suckling mice-
Ans. is 'a' i.e., Coxsackie virus . It is necessary to employ suckling mice for the isolation of coxsackie viruses. . Inoculation is usually made by intracerebral, subcutaneous and intraperitoneal route. . Adult mice are not susceptible.
Coxsackie virus
Rhinovirus
Echovirus
Poliovirus