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A Psychoyos

Publications and source records attributed to A Psychoyos.

72 records · Page 4Linked to original sources
PubMedDate not supplied

Problems related to the implantation of the human egg after in vitro fertilization.

Egg implantation, the process by which the conceptus comes in contact with the maternal vascular bed, occurs as the consequence of well coordinated ovo-endometrial interactions. In this paper the Authors describe the early steps of the implantation process in the rat. Several changes appearing in the rat endometrium are of particular interest because they also appear in the human endometrium around the normal time for implantation.

Animals↗
PubMedDate not supplied

[Development of ultrastructural changes in human cervix mucus during the ovarian cycle. Scanning electron microscope study].

The use of the Scanning Electron Microscope has made it possible through observation to study the human cervical mucus through the various stages of the ovarian cycle, as well as to describe the significant variations of the meshed woof making up the ultrastructure during the ovarian cycle. While the slackening of the woof and the dimension of the meshes are minimal at both the beginning and end of the cycle, they reach a maximum on forteenth day. In the ovulatory period, lateral expansions from the filaments are numerous. On the other hand, median and terminal thicknesses are almost inexistant during the same period : their frequency decreases during the first part of the cycle, then increases during the luteal phase. During both the preceding and following days of ovulation, one can observe numerous twistings at the level of the filaments which probably express the relaxation and then contraction of the latter. The preparatory technique as well as the method of observation used appear reliable enough to allow a comparison of the cervical mucus ultrastructure in varied physiological, pathological and experimental situations.

Adult↗