( ( A ( single cell ) ) ( ( is ( ( ( removed ( from ( a ( developing embryo ) ) ) ) and ) tested ) ) . ) )
(ROOT (S (NP (DT A) (JJ single) (NN cell)) (VP (VBZ is) (VP (VP (VBN removed) (PP (IN from) (NP (DT a) (VBG developing) (NN embryo)))) (CC and) (VP (VBN tested)))) (. .)))
A single cell is removed from a developing embryo and tested.
(ROOT (S (NP (PRP We)) (ADVP (DT all)) (VP (VP (VBP start) (PP (IN as) (NP (DT a) (JJ single) (NN cell)))) (CC and) (VP (ADVP (RB soon)) (VBP grow) (PRT (RP into)) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN embryo)))) (. .)))