( ( ( 6 ( Methodology Radioimmunoassay ) ) ( -LRB- ( RIA -RRB- ) ) ) ( ( ( ( Additional ( ( Information Gastrin ) ( is ( secreted ( by ( antral ( G cells ) ) ) ) ) ) ) and ) ( stimulates ( ( ( ( ( ( gastric ( acid production ) ) , ) ( antral motility ) ) , ) and ) ( secretion ( of ( ( ( pepsin and ) intrinsic ) factor ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (CD 6) (NNP Methodology) (NNP Radioimmunoassay)) (PRN (-LRB- -LRB-) (NP (NNP RIA)) (-RRB- -RRB-))) (VP (VP (VBD Additional) (SBAR (S (NP (NNP Information) (NNP Gastrin)) (VP (VBZ is) (VP (VBN secreted) (PP (IN by) (NP (JJ antral) (NNP G) (NNS cells)))))))) (CC and) (VP (VBZ stimulates) (NP (NP (JJ gastric) (JJ acid) (NN production)) (, ,) (NP (JJ antral) (NN motility)) (, ,) (CC and) (NP (NP (NN secretion)) (PP (IN of) (NP (ADJP (JJ pepsin) (CC and) (JJ intrinsic)) (NN factor))))))) (. .)))
6 Methodology Radioimmunoassay (RIA) Additional Information Gastrin is secreted by antral G cells and stimulates gastric acid production, antral motility, and secretion of pepsin and intrinsic factor.
(ROOT (S (NP (NNP Gastrin)) (VP (VBZ signals) (NP (NP (DT the) (NN secretion)) (PP (IN of) (NP (JJ gastric) (NN acid))))) (. .)))