( ( ( Preimplantation ( genetic screening ) ) ( -LRB- ( PGS -RRB- ) ) ) ( ( can ( be ( used ( to ( quantitate ( ( the risk ) ( of ( ( a child ) ( of ( being ( affected ( by ( a ( mitochondrial disease ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Preimplantation) (JJ genetic) (NN screening)) (PRN (-LRB- -LRB-) (NP (NNP PGS)) (-RRB- -RRB-))) (VP (MD can) (VP (VB be) (VP (VBN used) (S (VP (TO to) (VP (VB quantitate) (NP (NP (DT the) (NN risk)) (PP (IN of) (NP (NP (DT a) (NN child)) (PP (IN of) (S (VP (VBG being) (VP (VBN affected) (PP (IN by) (NP (DT a) (JJ mitochondrial) (NN disease)))))))))))))))) (. .)))
Preimplantation genetic screening (PGS) can be used to quantitate the risk of a child of being affected by a mitochondrial disease.
(ROOT (S (NP (NP (NNS Professionals)) (VP (VBN known) (PP (IN as) (NP (JJ genetic) (NNS counselors))))) (VP (MD can) (VP (VB help) (S (NP (PRP them)) (VP (VB understand) (NP (NP (DT the) (NNS risks)) (PP (IN of) (NP (NP (NNS children)) (VP (VBG being) (VP (VBN affected)))))))))) (. .)))