( ( Each cell ) ( ( is ( drawn ( as ( it ( is ( undergoing ( asexual ( cell division ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT Each) (NN cell)) (VP (VBZ is) (VP (VBN drawn) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ is) (VP (VBG undergoing) (NP (JJ asexual) (NN cell) (NN division)))))))) (. .)))
Each cell is drawn as it is undergoing asexual cell division.
(ROOT (S (S (NP (DT All) (NNS cells)) (VP (VBP undergo) (NP (NN cell) (NN division)) (PP (IN during) (NP (DT a) (NN lifetime))))) (, ,) (CC but) (S (SBAR (WHADVP (WRB when)) (S (NP (DT this) (NN process)) (VP (VBZ is) (ADVP (RB out)) (PP (IN of) (NP (NN control)))))) (, ,) (NP (NN cancer)) (VP (VBZ results))) (. .)))