( ( ( HIV 's ) ( latency period ) ) ( ( ( is ( contradictory to ) ) ( how ( viruses ( ( work and ) ( indicates ( toxicity ( , ( not infection ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP HIV) (POS 's)) (JJ latency) (NN period)) (VP (VBZ is) (ADJP (NN contradictory) (PP (TO to))) (SBAR (WHADVP (WRB how)) (S (NP (NNS viruses)) (VP (VP (VBP work)) (CC and) (VP (VBZ indicates) (NP (NN toxicity) (, ,) (RB not) (NN infection))))))) (. .)))
HIV's latency period is contradictory to how viruses work and indicates toxicity, not 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))))) (. .)))