( ( ( By ( the time ) ) ( ReA develops ) ) ( , ( ( the bacterium ) ( ( ( may ( no longer ) ) ( be detectable ) ) ; ) ) ) )
(ROOT (S (S (PP (IN By) (NP (DT the) (NN time))) (NP (NNP ReA)) (VP (VBZ develops))) (, ,) (NP (DT the) (NN bacterium)) (VP (MD may) (ADVP (RB no) (RB longer)) (VP (VB be) (ADJP (JJ detectable)))) (: ;)))
By the time ReA develops, the bacterium may no longer be detectable;
(ROOT (S (NP (NNS Bacteria)) (VP (MD may) (VP (VB divide) (NP (NP (QP (JJ several) (NNS times))) (NP (DT an) (NN hour))))) (. .)))