In fact it includes all the changes by which a fertilised ovum or zygote is transformed into an adult. (biologydiscussion.com)
This comprises, but is not restricted to, in vitro fertilization and embryo relocation, gamete intra-fallopian change, zygote intra-tubal change, embryonic tubal relocation, embryo and gamete cryopreservation, oocyte and embryo contribution, and gestational substitution. (academic-master.com)
For its part, the Society, for Assisted Reproductive Technology considers that such technology includes in-vitro fertilization/embryo transfer (FIV-TE), gamete intra-fallopian transfer (GIFT), zygote intra-fallopian transfer (ZIFT) and the transfer of frozen embryos. (academic-master.com)
The reproductive events in humans include the formation of gametes called gametogenesis, i.e., when the sperms in males, transfer into the female genital tract, and fusion with the female gametes which is called fertilisation leads to the formation of zygote. (careers360.com)
Motility2
However, the over production of oxygen free radicals in sperm membrane decreases the antioxidant defense activity thereby leading to low sperm motility and viability, DNA fragmentation and protein denaturation. (scialert.net)
Structural events and molecular mechanisms that promote mammalian sperm acrosomal exocytosis and motility. (uba.ar)
Vitro fertilization3
But he also believes that embryos produced outside of a woman's body, whether by cloning or in vitro fertilization, are not human beings unless or until they are implanted in a uterus. (tbfdev.com)
Recurrent implantation failure (RIF) refers to cases in which women have had three failed in vitro fertilization (IVF) attempts with good quality embryos. (biomedcentral.com)
Although there is no accepted formal definition for recurrent implantation failure, Orvieto suggests that it is after three failed in vitro fertilization-embryo transfer (IVF-ET) cycles with good quality embryos transferred [ 5 ]. (biomedcentral.com)
Zona Pellucida2
ABSTRACT Anti-zona-pellucida autoantibodies (AZP-Ab) and anti-sperm isoantibodies (ASA) were as- sessed in the cervical secretions from 73 infertile Jordanian women and 41 fertile control women using latex agglutination. (who.int)
The minisymposium, organized by Victor D. Vacquier, included the following presentations: "An Hypothesis to Explain the Evolution of Species-Specific Fertilization" by Victor D. Vacquier, "Molecular Biology of the Zona Pellucida: Genetic Mutations and Fertility" by Jurrein Dean, and "Sperm-Egg Membrane Interactions During Fertilizations" by Janice P. Evans. (bioone.org)
The tube, which connects the peritoneal space to the endometrial cavity, captures the egg after ovulation and transports the sperm from the uterus to the fertilization site in the ampulla (the middle portion of the tube). (medscape.com)
Its work is to stores and transports the sperm from the testes to the outside through urethra that originates from the urinary bladder and extends through the penis to its external opening called as urethral meatus. (careers360.com)
Mammalian1
Mammalian sperm cells present highly specific lipidic composition, high content of polyunsaturated fatty acids, plasmalogenes and sphingomyelins. (scialert.net)
Normal sperm1
Since, ROS is essential for the normal sperm physiology, rationale use of antioxidants is advocated. (scialert.net)
Ovulation2
Progestogens mediate their contraceptive effects both by inhibiting ovulation and by thickening cervical mucus, thereby preventing fertilization. (wikipedia.org)
The Medically Assisted Reproduction (MAR) is also defined as the 'Reproduction produced through the induction of ovulation, controlled ovarian stimulation, induced ovulation, ART (Assisted Reproduction Technology) procedures and intrauterine, intra-cervical or intra-vaginal fertilization with husband/partner or semen donor. (academic-master.com)
Embryo1
requirements have thyroid leeside by hulle Alta Genetics afdeling en Wikus se namesake being van Click embryo en emergency mechanics interest angles. (need4speed.com)
Implantation3
In reply to Hatch, Neaves, and others who make this argument, the first point to notice is that the standard embryology texts locate the beginning of the human individual at fertilization, not at implantation. (tbfdev.com)
Sperm analysis, pre-implantation genetic screening and endometrial receptivity should be considered and evaluated, and IVF protocols should be tailored to specific patients or patient populations. (biomedcentral.com)
Means of postcoital intervention to avoid pregnancy, such as the administration of POSTCOITAL CONTRACEPTIVES to prevent FERTILIZATION of an egg or implantation of a fertilized egg (OVUM IMPLANTATION). (lookformedical.com)
Infertile1
Infertile men may have deficiencies in sperm formation, concentration (eg, oligospermia [too few sperm], azoospermia [no sperm in the ejaculate]), or transportation. (medscape.com)
Occur3
Sperm-egg interactions occur at multiple levels on the egg surface, first with the egg's extracellular matrix and then with the egg's plasma membrane. (bioone.org)
begingroup$ Too many answers explore theoretical possibilities, while parthenogenesis - form of asexual reproduction in which growth and development of embryos occur without fertilization, which currently exist on our planet, is ignored. (stackexchange.com)
Parental care is thought to evolve through modification of behavioral precursors, which predicts that mechanistic changes occur in the genes underlying those traits. (bvsalud.org)
Embryos1
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. (lookformedical.com)
Functional3
and 3) characterization of functional domains in different sperm ligands (fertilin-α and fertilin-β in the mouse and lysin in the abalone) that recognize cognate binding sites on the egg surface. (bioone.org)
This unusual structure of sperm membrane is responsible for its flexibility and the functional ability of sperm cells. (scialert.net)
However, spermatozoa's lipids are the main substrates for peroxidation, which may provoke severe functional disorder of sperm. (scialert.net)
Males1
In males , FSH induces Sertoli cells to secrete androgen-binding proteins (ABPs), regulated by inhibin 's negative feedback mechanism on the anterior pituitary . (wikidoc.org)
Penetration1
But this view has been revised in light of emerging evidence: "[I]ndications have been found that in mammals the axis of bilateral symmetry is indeed determined (although at first in a labile way) by sperm penetration, as in amphibians. (tbfdev.com)
Reproduction2
EDITOR'S PREFACE: The first paper in this issue of Biology of Reproduction is a minireview entitled "Getting Sperm and Egg Together: Things Conserved and Things Diverged," by Janice P. Evans. (bioone.org)
[7] In eukaryotes, true sexual reproduction by meiosis and cell fusion is thought to have arisen in the last eukaryotic common ancestor , possibly via several processes of varying success, and then to have persisted. (wikizero.com)
Semen1
Indications for performing a postcoital test include semen hyperviscosity, increased or decreased semen volume with good sperm density, or unexplained infertility. (medscape.com)
Medication1
Anti-sperm any medication with potentially negative antibody (ASA) may also play a different effects on the rheological characteristics role in female infertility by interfering with of the mucus were stopped in the previous sperm migration through the female genital cycle. (who.int)
Disorder1
Within the body there is a constant interaction between order and disorder, thus once one understands the nature and structure of disorder, one can re-establish order. (drkirti-arogyam.com)
Infection1
Women with clinical symptoms of tract [ 8 ] and disrupting various stages of lower genital tract infection were excluded fertilization [ 9 ]. (who.int)
Formation1
Infertility in men can result from deficiencies in sperm formation, concentration, or transportation. (medscape.com)
Cell1
Sperm cell membranes are high in polyunsaturated fatty acids and are sensitive to oxygen free radical induced damage mediated by lipid peroxidation. (scialert.net)
Movement1
Complex coordinated contractions of the musculature are thought to be important for movement of the ovum from the distal end to the proximal end of the tube, while at the same time aiding in the movement of sperm from the proximal end to the distal end of the oviduct. (medscape.com)
Responsible1
FSH has a beta subunit of 111 amino acids (FSH β), which confers its specific biologic action, and is responsible for interaction with the follicle-stimulating hormone receptor . (wikidoc.org)
Human1
Importantly, perturbations in the microbiome can lead to both metabolic and immune diseases, highlighting the importance of understanding the "healthy" human microbiome and its interaction with the host. (frontiersin.org)
Highly1
Each testis has around 250 testicular lobules and each of them contains highly coiled seminiferous tubules in which sperms are produced. (careers360.com)
Effects2
Oxygen free radicals are naturally produced by mitochondrial and sperm plasma membrane and have beneficial and detrimental effects that cannot be overlooked. (scialert.net)
Interactions between the various hormones produce effects that may be synergistic, permissive, or antagonistic. (50webs.org)
Time1
Each individual constitution or psycho-somatic temperament is determined by the relative proportions of these three doshas at the time of fertilization. (drkirti-arogyam.com)
Healthy1
Ensuring the proper functions of channels ( srotas ) that transport fluids from one point to another is a vital goal of ayurvedic medicine, because the lack of healthy srotas is thought to cause rheumatism , epilepsy , autism , paralysis , convulsions , and insanity . (drkirti-arogyam.com)