GH1 and Infertility: In the present study, the proportion of type A endometrium in the intrauterine GH administration group was higher, consistent with the findings of Jiang et al. They compared the effects of intrauterine administration of granulocyte-colony stimulating factor (GCSF) with sub-endometrial administration of GH in 66 infertile women with IVF failure and thin endometrium.