A second type of vaccine is the modified live-virus (MLV) vaccine (also referred to as an attenuated vaccine), which contains viruses that have been altered by various techniques, so that they no longer produce clinical disease.
(A second type of vaccine; is; the modified live-virus) (they; no longer produce; clinical disease) (an attenuated vaccine; contains; viruses that have been altered by various techniques) (viruses; have been altered; by various techniques) (the modified live - virus ( MLV ) vaccine (; is A second type of; vaccine)
A second type of vaccine they an attenuated vaccine viruses the modified live - virus ( MLV ) vaccine (
is no longer produce contains have been altered is A second type of
the modified live-virus
clinical disease
viruses that have been altered by various techniques
by various techniques
vaccine