( ( ( The ( survival ( and ( implantation rate ) ) ) ) ( of ( ( cryopreserved 2-PN ) ( ( embryos and ) blastocysts ) ) ) ) ( ( was compared ) . ) )
(ROOT (S (NP (NP (DT The) (NN survival) (CC and) (NN implantation) (NN rate)) (PP (IN of) (NP (ADJP (JJ cryopreserved) (NP (CD 2-PN))) (NNS embryos) (CC and) (NNS blastocysts)))) (VP (VBD was) (VP (VBN compared))) (. .)))
The survival and implantation rate of cryopreserved 2-PN embryos and blastocysts was compared.
(ROOT (S (PP (IN After) (NP (NN implantation))) (, ,) (NP (DT the) (NN blastocyst)) (VP (VBZ is) (VP (VBN called) (NP (DT an) (NN embryo)))) (. .)))