( ( ( molecular genetics ) ( of ( viral pathogenesis ) ) ) ; )
(ROOT (NP (NP (JJ molecular) (NNS genetics)) (PP (IN of) (NP (JJ viral) (NNS pathogenesis))) (: ;)))
molecular genetics of viral pathogenesis;
(ROOT (S (NP (DT A) (JJ viral) (NN vector)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN for) (NP (NP (DT a) (NN tool)) (VP (ADVP (RB commonly)) (VBN used) (PP (IN by) (NP (JJ molecular) (NNS biologists))) (S (VP (TO to) (VP (VB place) (NP (JJ genetic) (NN material)) (PP (IN into) (NP (NNS cells))))))))))) (. .)))
A viral vector is the name for a tool commonly used by molecular biologists to place genetic material into cells.