( ( ( ( ( ( ( Viruses ( and ( viral infections ) ) ) ( with ( ( an emphasis ) ( on ( replication strategies ) ) ) ) ) , ) ( host ( and ( tissue specificity ) ) ) ) , ) ( effects ( of ( viruses ( on ( ( ( ( cells ( -LRB- ( ( ( ( ( ( cell death ) , ) transformation ) , ) latency ) -RRB- ) ) ) , ) and ) ( determinants ( of ( viral virulence ) ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NNS Viruses) (CC and) (JJ viral) (NNS infections)) (PP (IN with) (NP (NP (DT an) (NN emphasis)) (PP (IN on) (NP (NN replication) (NNS strategies))))) (, ,) (NP (NN host) (CC and) (NN tissue) (NN specificity)) (, ,) (NP (NP (NNS effects)) (PP (IN of) (NP (NP (NNS viruses)) (PP (IN on) (NP (NP (NP (NNS cells)) (PRN (-LRB- -LRB-) (NP (NN cell) (NN death)) (, ,) (NP (NN transformation)) (, ,) (NP (NN latency)) (-RRB- -RRB-))) (, ,) (CC and) (NP (NP (NNS determinants)) (PP (IN of) (NP (JJ viral) (NN virulence))))))))) (. .)))
Viruses and viral infections with an emphasis on replication strategies, host and tissue specificity, effects of viruses on cells (cell death, transformation, latency), and determinants of viral virulence.
(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))))) (. .)))