09-28-2006, 12:28 AM
poliovirus can be grown in cultured monkey kidney cells through repeated passages, resulting in virus that is no longer neurovirulent. This virus can be used as a vaccine because it has become
a. attenuated
b. defective
c. inactivated
d. latent
e. recombinant
a. attenuated
b. defective
c. inactivated
d. latent
e. recombinant