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Cellular Signals Controlling Uterine Function by Lynn A. Lavia (auth.), Lynn A. Lavia (eds.)

By Lynn A. Lavia (auth.), Lynn A. Lavia (eds.)

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Lavia, L. A, and Walker, N. , Induction of nucleolar changes in rat luminal cells by injection or low-dose infusion of estradiol-17,8, Steroids 51:24 (1988). 57. Roberts, D. , Walker, N. , and Lavia, L. A, Ultrastructural evidence of stromalepithelial interactions in the human endometrial cycle, Am. J. Obstet. , 158, 854 (1988). 58. Roberts, D. , Lavia, L. A, Horbelt, D. , and Walker, N. , Changes in nuclear and nucleolar areas of glandular cells throughout the menstrual cycle, IntI. J. Gynecol.

E TIME (HOURS) ee 188 Figure 9. A model of population changes in luminal epithelial cells and stromal cells immediately adjacent. 0 "g E2/24 hours. Within four hours after implantation, epithelial nuclei synchronously condense (SYNCH). After this time, approximately 15% of the epithelial cells are "recruited" to hypertrophy as stromal cells migrate to the lamina densa. After the epithelial cells begin to proliferate, stromal cells adjacent to the lamina densa begin to produce protein. point. The close interactions seen in especially the human endometrium near the conversion of proliferative epithelial cells to glycogenated secretory cells at the time of ovulation suggests that stromal inductive effects are quite important for the terminal differentiation in the epithelial cell layer seen at the time of ovulation in the human.

0% solution of trypsin for an hour. The resulting epithelial cell sheets were spread on slides and ftxed, then stained with Feulgen. A typical result is shown in Figure 5. The enlarged nuclei in the micrograph were determined by densitometric analysis of Feulgen-stained specimens to have more than a 2n concentration of DNA, thus, they were either in S or G 2 phase. These cells were arranged in clusters. 37 Figure 6. An examination of luminal epithelial cells after treatment with estrogen. These tissues have been stained with H222, an estrogen receptor antibody.

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