نتایج جستجو برای: blighted ovum
تعداد نتایج: 21315 فیلتر نتایج به سال:
In this controlled clinical study, we determined the serum and follicular fluid concentrations of the biologically active fractions of magnesium (Mg) and calcium (Ca) in 39 women undergoing controlled ovarian stimulation (COH) for in vitro fertilization (IVF) embryo transfer (ET). Serum levels of ionized Ca (Ca2+) and ionized Mg (Mg2+) were measured during day 3 of the IVF cycle, on the day of ...
Oocyte quality in pigs is defined as the potential of that oocyte to develop into a viable offspring. There is increasing evidence that the programming of the oocyte must be completed before leaving the ovarian follicle, including both nuclear and cytoplasmic maturation. Pig oocytes matured in vitro under basic conditions are deficient in some, as yet unidentified, cytoplasmic factors and thus ...
STUDY QUESTION What proportion of pregnancies are a result of ovum transmigration after salpingectomy for ectopic pregnancy? SUMMARY ANSWER Approximately one-third of spontaneously conceived pregnancies are a result of pick-up of the ovum from the ovary contralateral to the remaining tube in women with a history of salpingectomy. WHAT IS KNOWN ALREADY The corpus luteum has been found contra...
In the process of fertilization, most mammalian spermatozoa must penetrate through a series of egg investments before reaching the vitelline membrane. By contrast, cock spermatozoa have only to penetrate the vitelline membrane of the hen's ovum. The composition of the vitelline membrane of the hen's ovum at the time of ovulation has been described by Bellairs, Harkness & Harkness (1963) as a si...
QUATrROCENTO medical writings have fascinated few modem historians of medicine. Despite Lynn Thorndike's masterful challenges to it,' George Sarton's view has generally prevailed with investigators, that for science the Italian Renaissance, while perhaps a period of preparation, was certainly a period of dissolution.2 Although in recent years historians have come to realize that Vesalius' achie...
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