Ashton I K, Francis M J
J Endocrinol. 1978 Mar;76(3):473-7. doi: 10.1677/joe.0.0760473.
Plasma somatomedin activity enhanced the incorporation of [3H]thymidine into chondrocytes isolated from human foetal cartilage during weeks 13-21 of gestation. Human growth hormone (0.1-20 muu./ml), human placental lactogen (0.1-5 microgram/ml) and insulin (0.25-10 muu./ml) had no direct effects on the synthesis of DNA in these chondrocytes, although insulin at concentrations of 2.5-100 mu./ml increased [3H]thymidine incorporation by up to 400%.
在妊娠13 - 21周期间，血浆生长调节素活性增强了从人胎儿软骨分离出的软骨细胞对[3H]胸苷的掺入。人生长激素（0.1 - 20毫微单位/毫升）、人胎盘催乳素（0.1 - 5微克/毫升）和胰岛素（0.25 - 10毫微单位/毫升）对这些软骨细胞中的DNA合成没有直接影响，尽管浓度为2.5 - 100微单位/毫升的胰岛素可使[3H]胸苷掺入增加高达400%。
