( ( ( ( analysis ( of ( ( ( ( ( ( virus load ) , ) latency ) , ) and ) mechanisms ) ) ) ( of ( CD4 depletion ) ) ) ( in ( HIV infection ) ) ) . )
(ROOT (NP (NP (NN analysis)) (PP (IN of) (NP (NP (NN virus) (NN load)) (, ,) (NP (NN latency)) (, ,) (CC and) (NP (NNS mechanisms)))) (PP (IN of) (NP (NN CD4) (NN depletion))) (PP (IN in) (NP (NN HIV) (NN infection))) (. .)))
analysis of virus load, latency, and mechanisms of CD4 depletion in HIV infection.
(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))))) (. .)))