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生物学 旁分泌 Human epidermal growth factor is a 53-amino acid autocrine/paracrine peptide of 6221Da, and is secreted in saliva, gastric juice, blood and urine, which have an isoelectric point of 4.6 and a resistance to heat. 人表皮细胞生长因子(human epidermal growth factor,hEGF)是存在于唾液、胃液、血液、尿液中的一种分泌肽,由53个氨基酸组成,分子量为6221Da,等电点为4.6,对热稳定,根据分泌方式可分为旁分泌和自分泌两种。 旁泌性 副分泌
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