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导言胸腺素的化学和生物学特征研究的新进展,已证明胸腺对网织内皮系统和宿主免疫有一个重要的内分泌的作用。胸腺素组份5中的某些肽是专门由胸腺上皮细胞产生的,称之为胸腺激素;而另一些胸腺素组分5中的肽类成分看来是胸腺细胞的产物(淋巴因子);此外,还有一些是没有生物活性的污
INTRODUCTION Recent advances in the study of the chemical and biological characteristics of thymosins have shown that the thymus has an important endocrine effect on the reticuloendothelial system and host immunity. Some peptides in thymosin component 5 are produced exclusively by thymic epithelial cells and are called thymus hormones; while others in the thymosin component 5 appear to be products of thymocytes (lymphokines); In addition, some are non-biologically active fouling