( they ( ( are ( ( the ( master cells ) ) ( that ( can ( make ( ( all ( the ( blood cells ) ) ) ( required ( for life ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP they)) (VP (VBP are) (NP (NP (DT the) (NN master) (NNS cells)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB make) (NP (NP (PDT all) (DT the) (NN blood) (NNS cells)) (VP (VBN required) (PP (IN for) (NP (NN life))))))))))) (. .)))
they are the master cells that can make all the blood cells required for life.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN cell)) (VP (VBZ is) (NP (NP (DT the) (JJS lowest) (NN level)) (PP (IN of) (NP (NN organism))) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB perform) (NP (NP (DT all) (NNS activities)) (VP (VBN required) (PP (IN for) (NP (NN life))))))))))) (. .)))