Results 161 to 170 of about 178,315 (191)
Some of the next articles are maybe not open access.
Human Heredity, 1973
Data on family size distribution and inheritance are presented. Variance in sibship size is in general greater than mean sibship size.
M.M. Nelson, O. Mayo, J.O. Forfar
openaire +3 more sources
Data on family size distribution and inheritance are presented. Variance in sibship size is in general greater than mean sibship size.
M.M. Nelson, O. Mayo, J.O. Forfar
openaire +3 more sources
Obstetrical & Gynecological Survey, 1980
Human In Vitro Fertilization MARK EVANS;ANIL MUKHERJEE;JOSEPH SCHULMAN; Obstetrical & Gynecological ...
Anil B. Mukherjee +2 more
openaire +3 more sources
Human In Vitro Fertilization MARK EVANS;ANIL MUKHERJEE;JOSEPH SCHULMAN; Obstetrical & Gynecological ...
Anil B. Mukherjee +2 more
openaire +3 more sources
The genetics of human fertility
Current Opinion in Psychology, 2019Heritable variation in fitness-survival and reproduction-is the fuel of evolution by natural selection. Many human societies have dramatically reduced mortality before and during the prime reproductive years, making fertility a reasonably good proxy for the whole of fitness in much of our species.
James J. Lee, Yuri Kim
openaire +3 more sources
An Update on Human Fertilization
Seminars in Reproductive Medicine, 1998The process of fertilization and the role that each gamete plays in that process have been the subject of investigation in a large number of species and for many years. However, while much is now known for some species relatively little is known for others.
openaire +3 more sources
JAMA: The Journal of the American Medical Association, 1982
To the Editor.— Regarding the article entitled "Human In Vitro Fertilization: A Conservative View" (1982; 247:3235), I would like to challenge Dr Tiefel on several of the following points. "There is some justification for deeming in vitro fertilization to be harmful to the offspring thus conceived." Actually, there is good reason to believe that ...
openaire +3 more sources
To the Editor.— Regarding the article entitled "Human In Vitro Fertilization: A Conservative View" (1982; 247:3235), I would like to challenge Dr Tiefel on several of the following points. "There is some justification for deeming in vitro fertilization to be harmful to the offspring thus conceived." Actually, there is good reason to believe that ...
openaire +3 more sources
Endocannabinoid Degradation and Human Fertility
Journal of Cannabis Therapeutics, 2002SUMMARY Anandamide (AEA) impairs mouse pregnancy and embryo development. Here, we overview the role of AEA in sexual function, focusing on AEA degradation during human pregnancy. Human peripheral lymphocytes express the AEA-hydrolyzing enzyme fatty acid amide hydrolase (FAAH), which decreases in miscarrying women.
M. BARI +4 more
openaire +4 more sources
3 Fertilization and Development in Humans
1996Publisher Summary This chapter discusses the events of human fertilization, such as gamete maturation and sperm-egg interaction, including the major aspects of current in vitro fertilization technologies, such as sperm injection and blastomere biopsy.
Ariff Bongso, Alan O Trounson
openaire +3 more sources
HUMAN FERTILITY IN PUERTO RICO
Obstetrical & Gynecological Survey, 1947The gross reproduction ratio of Puerto Rico has remained unchanged at a level of 2.5 from 1899 to 1940. This has resulted from a decline of marital fertility of about 25 per cent, balanced by an increased frequency of the married state. The decline of marital fertility has been greater in urban than in rural areas.
openaire +4 more sources
Dispermic fertilization of human oocytes
Journal of Electron Microscopy Technique, 1991AbstractRegardless of whether fertilization occurs in vivo or in vitro, polyspermic penetration of the human oocyte is a not infrequent cause of reproductive failure. This report describes the occurrence of human eggs fertilized by two spermatozoa and the variable developmental potentials expressed by the resultant embryos. The cellular and subcellular
George P. Henry, J Van Blerkom
openaire +3 more sources
Nature, 1960
Modern Science and the Human Fertility Problem By Richard L. Meier. Pp. xiii + 263. (New York: John Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1959. Sponsored by the Conservation Foundation, New York.) 48s. net.
openaire +2 more sources
Modern Science and the Human Fertility Problem By Richard L. Meier. Pp. xiii + 263. (New York: John Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1959. Sponsored by the Conservation Foundation, New York.) 48s. net.
openaire +2 more sources