Abstract
HUMAN spermatozoa invariably live longer in ovulation cervical mucus than in their own seminal fluid. This can be observed in slide cover glass or capillary tube preparations. At ovulation the cervical mucus is most abundant, possesses the lowest viscosity or spinnbarkeit, is most translucent, contains the highest water concentration and fewest cells, is most alkaline, permits maximum spermatozoan penetration, contains the maximum of glycogen, maltose, mannose, fructose, fucose, hexosamine, glutamic acid, taurine, methionine, lysine, aspartic acid, glycine, alanine, valine, serine, arginine, cholesterol, lipid, phosphorus, and sodium chloride. It possesses thromboplastic activity and is bacteriostatic. Blood group substances corresponding to the blood group of the individual occur in the cervical secretion in high titre if the person is a secretor1.
Similar content being viewed by others
Article PDF
References
Shettles, L. B., J. Reprod. Med., 3, 43 (1969).
Shettles, L. B., Amer. J. Obstet. Gynec., 66, 235 (1953).
Shettles, L. B., Trans. NY Acad. Sci., 17, 99 (1955).
Shettles, L. B., Amer. J. Obstet. Gynec., 76, 398 (1958).
Shettles, L. B., Ovum Humanum (Urban and Schwarzenberg, Munich, 1960).
Shettles, L. B., Obstet. Gynec., 20, 750 (1962).
Shettles, L. B., Bull. Sloane Hospital for Women, 10, 246 (1964).
Shettles, L. B., in Scientific Foundations of Obstetrics and Gynecology (edit. by Philipp, E. E., Barnes, J., and Newton, M.) (Heinemann, London, 1970).
Edwards, R. G., Steptoe, P. C., and Purdy, J. M., Nature, 227, 1307 (1970).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
SHETTLES, L. Human Blastocyst grown in vitro in Ovulation Cervical Mucus. Nature 229, 343 (1971). https://doi.org/10.1038/229343a0
Received:
Issue Date:
DOI: https://doi.org/10.1038/229343a0
This article is cited by
-
Considerations for whole exome sequencing unique to prenatal care
Human Genetics (2020)
-
Gonadotropin stimulation: past, present and future
Reproductive Medicine and Biology (2012)
-
Fertilization of human ova in vitro
Bulletin of Experimental Biology and Medicine (1973)
-
Post-blastocyst Differentiation in vitro
Nature (1971)
-
Problems of Artificial Fertilization
Nature (1971)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.