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*  Complications of pregnancy
Ectopic pregnancy is implantation of the embryo outside the uterus Caused by: Unknown, but risk factors include smoking, ... Unintended pregnancies preclude preconception care and delays prenatal care. They preclude other preventive care, may disrupt ... The embryo and fetus have little or no immune function. They depend on the immune function of their mother. Several pathogens ... Often microorganisms that produce minor illness in the mother are very dangerous for the developing embryo or fetus. This can ...
*  Embryonic stem cell
Martin Evans and Matthew Kaufman reported a technique that delays embryo implantation, allowing the inner cell mass to increase ... an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage 4-5 days post fertilization, at which time ... The surplus of embryos is not clinically used or is unsuitable for implantation into the patient, and therefore may be donated ... whether or not embryos at the pre-implantation stage should be considered to have the same moral or legal status as embryos in ...
*  Brown bear
Uterus and Embryo during the Delayed Implantation Period in the Hokkaido Brown Bear (Ursus arctos yesoensis)". Journal of ... Through the process of delayed implantation, a female's fertilized egg divides and floats freely in the uterus for six months. ... If the mother does not gain enough weight to survive through the winter, the embryo does not implant and is reabsorbed into the ...
*  Fur seal
... including a several-month period of delayed implantation of the embryo. While northern fur seal males aggressively select and ...
*  List of MeSH codes (G08)
... embryo implantation MeSH G08.520.170.104.500.100 --- embryo implantation, delayed MeSH G08.520.170.104.750 --- embryonic ...
*  Grizzly bear
Once mated with a male in the summer, the female delays embryo implantation until hibernation, during which miscarriage can ...
*  Pygmy spotted skunk
The mating season occurs in September or October, but the delayed implantation of the embryo lasts until March or April of the ...
*  Pinniped
All species go through delayed implantation, wherein the embryo remains in suspended development for weeks or months before it ... Delayed implantation postpones the birth of young until the female hauls-out on land or until conditions for birthing are ... Gestation in seals (including delayed implantation) typically lasts a year. For most species, birthing takes place in the ...
*  New Zealand lesser short-tailed bat
After mating, the embryo enters a state of delayed implantation through the winter, so a single young is born in the summer. ...
*  Sundevall's roundleaf bat
Gestation lasts about three to four months, but in some populations, delayed implantation of the embryo causes birth of the ...
*  Southern bent-wing bat
Mating occurs in the fall, but the embryo doesn't begin to grow until the spring due to delayed implantation. Females do not ...
*  Mink
... show the curious phenomenon of delayed implantation. Although the true gestation period is 39 days, the embryo may stop ...
*  Wolverine
... but the actual implantation of the embryo (blastocyst) in the uterus is stayed until early winter, delaying the development of ...
*  Luzon fruit bat
Research has concluded that females undergo delayed implantation, although the specific length of delay is unknown. Male ... And the distribution of embryo between the left and right uteri are relatively equal and no preference has been observed. ...
*  Asian black bear
Similar to brown bears, Asiatic black bears have delayed implantation. Sows usually give birth in caves or hollow trees in ... By late December, the embryos weigh 75 grams. Sows generally have their first litter at the age of three years. Pregnant ...
*  Embryonic diapause
Delayed implantation or embryonic diapause is a reproductive strategy used by approximately 100 different mammals in seven or ... "Implantation". University of Wyoming. Retrieved 2008-04-05. Daniel, J.C., Jr. (Apr 1970). "Dormant embryos of mammals". ... Obligate diapause is also known as seasonal delayed implantation and is a mechanism that allows mammals to time the birth of ... Facultative diapause is also known as lactational delayed implantation due to its regulation via lactation. If a female ...
*  Western spotted skunk
Including this period of delayed implantation, gestation lasts 230 to 250 days, with the litter of two to five young being born ... After fertilisation, the embryo develops to the blastocyst stage, but then becomes dormant for several months before implanting ... the presence of delayed implantation in the western spotted skunk clearly sets it apart. Seven subspecies are generally ... Foreman, K.R. & Mead, R.A. (1973). "Duration of post-implantation in a western subspecies of the spotted skunk (Spilogale ...
*  Embryo cryopreservation
... and therefore frozen embryo transfer avails for a separate cycle to focus on optimizing the chances of successful implantation ... 2011 came to the result that embryo freezing before administration of gonadotoxic chemotherapy agents to females caused a delay ... Direct Frozen Embryo Transfer: Embryos can be frozen by SPF in ethylene glycol freeze media and transfer directly to recipients ... Embryo cryopreservation is useful for leftover embryos after a cycle of in vitro fertilisation, as patients who fail to ...
*  Fertilisation
... as the post-implantation embryo and its surrounding membranes. The term "conception" is not usually used in scientific ... practise delayed fertilisation. Anong the Odonata, females may mate with multiple males, and store sperm until the eggs are ... Embryonic implantation not in the uterine wall results in an ectopic pregnancy that can kill the mother. In such animals as ... Its use 'conception' by some to refer to implantation makes it a subject of semantic arguments about the beginning of pregnancy ...
*  Nine-banded armadillo
A single egg is fertilized, but implantation is delayed for three to four months to ensure the young will not be born during an ... Incisors do form in the embryos, but quickly degenerate and are usually absent by birth. Nine-banded armadillos are solitary, ... during which the zygote splits into four identical embryos, each of which develops its own placenta, so blood and nutrients are ...
*  Dasypus
Delaying the implantation further has no effect on the number of offspring produced. The armadillo young are fully developed at ... meaning their offspring are genetically identical due to the division of a single fertilized egg into four matching embryos. ... Gestation is about five months long, and the implantation delay allows the armadillos to give birth at a more opportune time ...
*  WNT4
"WNT4 is a key regulator of normal postnatal uterine development and progesterone signaling during embryo implantation and ... If deficient in XY mice, there is a delay in Sertoli cell differentiation. Moreover, there is delay in sex cord formation. ... These processes are all necessary for the development of an embryo. Ablation in female mice results in subfertility, with ... defects in implantation and decidualization. For instance, there is a decrease in responsiveness to progesterone signaling. ...
*  Embryo transfer
The optimal target for embryo placement, known as the maximal implantation potential (MIP) point, is identified using 3D/4D ... Sroga JM; Montville CP; Aubuchon M; Williams DB; Thomas MA (April 2010). "Effect of delayed versus immediate embryo transfer ... In a survey of the North American embryo transfer industry, embryo transfer success rates from direct transfer of embryos were ... Embryo transfer refers to a step in the process of assisted reproduction in which embryos are placed into the uterus of a ...
*  Atosiban
"Use of an oxytocin antagonist in in vitro fertilization-embryo transfer for women with repeated implantation failure: a ... Atosiban is indicated to delay imminent pre-term birth in pregnant adult women with: regular uterine contractions of at least ... "Atosiban improves implantation and pregnancy rates in patients with repeated implantation failure". Reprod Biomed Online. 25 (3 ... Originally marketed by Ferring Pharmaceuticals, it is licensed in proprietary and generic forms for the delay of imminent pre- ...
*  Perlecan
... in the mouse blastocyst is regulated during normal and delayed implantation". Dev. Biol. 184 (1): 38-47. doi:10.1006/dbio. ... In the rat embryo, perlecan expression has been shown to increase in vascular smooth muscle cells (VSMCs) post e19 in fetal ... Zhou Z, Wang J, Cao R, Morita H, Soininen R, Chan KM, Liu B, Cao Y, Tryggvason K (July 2004). "Impaired angiogenesis, delayed ... Pre-implantation blastocyst development is a controlled cascade of gene regulation and intercellular signaling. Extracellular ...
*  XX gonadal dysgenesis
A woman with a uterus but no ovaries may be able to become pregnant by implantation of another woman's fertilized egg (embryo ... Evaluation of delayed puberty usually reveals the presence of pubic hair, but elevation of gonadotropins, indicating that the ...
*  Michigan Proposal 08-2
... the embryos - are created for fertility treatment purposes; are not suitable for implantation or are in excess of clinical ... However, the opening has been delayed because TechTown has had trouble getting funds and State Senator Thomas George is ... Provide that stem cells cannot be taken from human embryos more than 14 days after cell division begins. Prohibit any person ... The text of the amendment stated: The proposed constitutional amendment would: Expand use of human embryos for any research ...