( ( ( This family ) ( of viruses ) ) ( ( is ( known ( for ( ( ( ( ( ( latency ( , ( persistent viremia ) ) ) , ) ( infection ( of ( the ( nervous system ) ) ) ) ) , ) and ) ( weak ( host ( immune responses ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT This) (NN family)) (PP (IN of) (NP (NNS viruses)))) (VP (VBZ is) (VP (VBN known) (PP (IN for) (NP (NP (JJ latency) (, ,) (JJ persistent) (NN viremia)) (, ,) (NP (NP (NN infection)) (PP (IN of) (NP (DT the) (JJ nervous) (NN system)))) (, ,) (CC and) (NP (JJ weak) (NN host) (JJ immune) (NNS responses)))))) (. .)))
This family of viruses is known for latency, persistent viremia, infection of the nervous system, and weak host immune responses.
(ROOT (S (PP (IN After) (S (VP (VBG infecting) (NP (DT a) (NN host))))) (, ,) (NP (DT some) (NNS viruses)) (VP (VBP enter) (NP (NP (DT the) (JJ inactive) (NN state)) (PP (IN of) (NP (NN latency))))) (. .)))