fertilizable


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capable of being fertilized

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Latest research shows that ovulation disorders or ovarian dysfunction (unable to produce fertilizable oocytes) which is caused by endocrine disorders is the most common cause of female infertility [46-48].
With the advancement in culture systems and laboratory procedures, there was a need for parallel development in ovarian stimulation protocols so as to increase the yield of fertilizable oocytes.
In vivo fertilized 2 pronuclei (PN) embryos were recovered from four to six week-old F1 female mice (C57BL/6xCBA) that had been superovulated by intraperitoneal (ip) injection with 5 IU PMSG (Sigma) followed by ip injection of 5 IU of hCG (Sigma) 48 h later, then immediately mated with fertilizable F1 male mice of the same strain.
A doe's egg is fertilizable for about 24 hours, the only time she'll permit a buck to mate with her.
This collection of 18 extended articles focuses on specific issues, including techniques and events leading to a fertilizable oocyte, physiological functions of gonadotropins, functions and patterns of change in gonadal steroids, vitellogenesis, follicular steroidogenesis, hormonally derived sex pheromones, reproductive physiology in viviparous teleosts, mating systems, reproductive strategies, cost-benefit comparisons in energy investments, reproductive behavior in shoaling fish, parental care and predator risk, the impact of environmental factors on fish endocrinology, shark reproductive ecology, estrogen pathways, molecular markers of androgen disruption, concerns about the effects of aquaculture, and fish reproduction within cultivation of cold water marine species.
When analyzed in relation to the occurrence of the other age classes in our estuaries, age-2 fish contributed the greatest number of fertilizable oocytes to the environment (39%).
Previously, scientists have grafted ovarian tissue into animals and detected small eggs, but this is the first group to obtain mature, potentially fertilizable eggs.
In contrast, copulations in fairy-wrens are observed only rarely, and males spend considerable time away from their territory displaying to neighboring females, even when their mate is fertilizable (Green et al.
While unprotected intercourse may take place at any time during the menstrual cycle, pregnancy can only result from intercourse during the fertile phase-- from about five days before until about 24 hours after ovulation, a period that corresponds to the life span of sperm in the female genital tract and the time during which the oocyte is fertilizable. The human blastocyst probably starts to penetrate the uterine mucosa by the fifth or sixth day after fertilization, (7) and implantation is completed--and pregnancy established--around the time of missed menses.
Although granting Jameson's analysis "some validity," Scott misses Jameson's point: that Lewis's novel is a satire of surfaces, written precisely against the metaphors of "depth" and "substance" that she apparently values.(3) Bertha, the first woman with whom Tarr becomes entangled, Scott describes with disapproval as "bourgeois, sentimental, vegetative" (171), a description reminiscent of Joyce's view of Molly Bloom as a "perfectly sane full amoral fertilizable .
The consistency in stages of female gonad development that were observed within an individual are easily explained by the fact fertilizable eggs must be discharged within a short period to ensure continuity in the developmental stage of brooded larvae.
[17] In the revised model (Model 2), the probability of conception is expressed as: P = [P.sub.o] [P.sub.f] [P.sub.v], where [P.sub.o], [P.sub.f] and [P.sub.v] are, respectively, probabilities that a fertilizable ovum is produced, that it is fertilized and that the conceptus survives to the point of observation.
Copious numbers of fertilizable oocytes were obtained from female P.