It " s shown from the results that the pituitary gland of silurus asotus originates from two embryonic cells of different position ; and the doral wall of the original cavum oris forms the rostral pars distali ( rpd ) and the proximal pars distalis ( ppd ) ; the infundibulum of the ventral part of diencephalons forms the the pars intermedia ( pi ) and the neurohypophsis 结果表明：鲇脑垂体由两个不同部位的胚胎细胞形成，原始口腔背壁外胚层分离出来的细胞构成腺垂体的前外侧部( rpd )和中外侧部( ppd ) ，从间脑腹面漏斗体分离出来的细胞构成腺垂体中间部( pi )及神经垂体( nh ) 。
