( ( ( Detection ( of ( the ( Philadelphia chromosome ) ) ) ) ( in ( interphase nuclei ) ) ) . )
(ROOT (NP (NP (NNP Detection)) (PP (IN of) (NP (DT the) (NNP Philadelphia) (NN chromosome))) (PP (IN in) (NP (JJ interphase) (NNS nuclei))) (. .)))
Detection of the Philadelphia chromosome in interphase nuclei.
(ROOT (S (NP (DT The) (NNS chromosomes)) (VP (VB duplicate) (PP (IN in) (NP (DT the) (JJ interphase) (NN phase)))) (. .)))