The authors have performed the scanning and transmission electron microscopic study of the endometrium of four women with normal menstrual periods. At day 10 of the cycle, the ciliated-non ciliated rate (CNCR) is about 1:20: the former cells are more numerous close to the openings of the glands; the latter cells are packed together around the openings of the glands and present microvilli on their surface. At day 14, the CNCR is not changed; however, cilia are higher and more florid, microvilli are higher and larger and the cytoplasm of the periglandular cells shows early secretion. We have concluded that: surface epithelium reaches a permanent structure in a short time, but superficial cell appendages may be modified during the cycle; and that the prominent development of both cilia and microvilli, observed in some areas and in some instances, as well as the extent of secretory cells per unit of tissue, may indicate that these factors are involved in the selection of both the time and the site of implantation.
|Number of pages||7|
|Journal||Annali di Ostetricia Ginecologia Medicina Perinatale|
|Publication status||Published - 1982|
ASJC Scopus subject areas
- Obstetrics and Gynaecology