母乳中的细胞分裂素和生长因子等,对婴儿的免疫功能和生长发育起重要作用。目前已明确的有: 1.表皮生长因子(EGF)在初乳中为100ng/ml,成乳中为50ng/ml。母乳中的EGF经新生儿肠管吸收,有使其成长作用,还是肠上皮细细和肝细胞的增殖因子,可能与新生儿肝和消化管功能发育有关。 2.转化生长因子α(TGF_α)生理作用与EGF同,有新生儿成长作用和肠管上皮细胞、肝细胞增 Breast milk cytokinin and growth factors, the baby’s immune function and growth and development play an important role. At present, it is clear that: 1. Epidermal growth factor (EGF) is 100 ng / ml in colostrum and 50 ng / ml in milk. Breast milk in the EGF through the neonatal intestinal absorption, to make its growth, or intestinal epithelial thin and hepatocyte proliferation factor, may be neonatal liver and digestive tube function development. 2. Transforming growth factor alpha (TGF_α) Physiological role and EGF with the growth of newborns and intestinal epithelial cells, hepatocytes increased