(S (S (SBAR (WHADVP (WRB When)) (S (NP (NN Dichloroacetate) (PRN (LRB -LRB-) (BASENP (NN DCA)) (RRB -RRB-))) (VP (VBZ enters) (BASENP (DT a) (NN cancer) (NN cell))))) (COMMA ,) (S (S (BASENP (PRP it)) (VP (VBZ restarts) (NP (BASENP (DT the) (NN mitochondria)) (SBAR (WHNP (WDT which)) (S (VP (PP (IN in) (BASENP (NN turn))) (VP (VBP activate) (BASENP (NN apoptosis))))))))) (CONJP (COMMA ,) (CC and)) (S (BASENP (DT the) (JJ cancerous) (NN cell)) (VP (VBZ destroys) (BASENP (NN itself)))))) (PERIOD .))