Results 271 to 280 of about 167,796 (316)
Some of the next articles are maybe not open access.
Ugeskrift for laeger, 2021
The number of treatments with donated oocytes has risen markedly in Denmark during the latest decade due to changes in legislation and because female age is increasingly advanced when fertility treatment is warranted. Today, oocyte donation is a standard procedure offering the otherwise untreatable a high chance of achieving a pregnancy.
Larsen, Elisabeth Clare +2 more
openaire +2 more sources
The number of treatments with donated oocytes has risen markedly in Denmark during the latest decade due to changes in legislation and because female age is increasingly advanced when fertility treatment is warranted. Today, oocyte donation is a standard procedure offering the otherwise untreatable a high chance of achieving a pregnancy.
Larsen, Elisabeth Clare +2 more
openaire +2 more sources
BJOG: An International Journal of Obstetrics & Gynaecology, 1989
Summary. Oocyte donation provides an option for achieving pregnancy in women lacking functioning gonads, or in whom IVF techniques have failed to harvest adequate oocytes, or those who do not wish to use their own gametes because of hereditary disease. In agonadal women, artificial menstrual cycles are required before proceeding to gamete donation.
I T, Cameron +5 more
openaire +2 more sources
Summary. Oocyte donation provides an option for achieving pregnancy in women lacking functioning gonads, or in whom IVF techniques have failed to harvest adequate oocytes, or those who do not wish to use their own gametes because of hereditary disease. In agonadal women, artificial menstrual cycles are required before proceeding to gamete donation.
I T, Cameron +5 more
openaire +2 more sources
Cloning and Stem Cells, 2005
In assisted human reproduction, the cytoplasm of oocytes recovered from follicles is often abnormal. Its lower quality, especially in older patients, may be responsible for certain chromosomal abnormalities or developmental arrest. Thus, the deficiency of some vital molecules, which are necessary for oocyte maturation, can be the cause of infertility ...
FULKA J. JR +3 more
openaire +3 more sources
In assisted human reproduction, the cytoplasm of oocytes recovered from follicles is often abnormal. Its lower quality, especially in older patients, may be responsible for certain chromosomal abnormalities or developmental arrest. Thus, the deficiency of some vital molecules, which are necessary for oocyte maturation, can be the cause of infertility ...
FULKA J. JR +3 more
openaire +3 more sources
Current Opinion in Obstetrics and Gynecology, 1992
Use of donor oocytes is becoming an increasingly important facet of assisted reproductive technology programs. Candidates for donor oocytes include women with premature ovarian failure or severe genetic disorders, women who respond poorly to human menopausal gonadotropin, and women older than 40 years who do not conceive with used of other therapies ...
openaire +2 more sources
Use of donor oocytes is becoming an increasingly important facet of assisted reproductive technology programs. Candidates for donor oocytes include women with premature ovarian failure or severe genetic disorders, women who respond poorly to human menopausal gonadotropin, and women older than 40 years who do not conceive with used of other therapies ...
openaire +2 more sources
Trends in Cell Biology
Animal oocytes face extreme challenges. They remain dormant in the body for long periods of time. To support offspring development and health, they need to store genetic material and maternal factors stably and at the same time manage cellular damage in a reliable manner.
openaire +2 more sources
Animal oocytes face extreme challenges. They remain dormant in the body for long periods of time. To support offspring development and health, they need to store genetic material and maternal factors stably and at the same time manage cellular damage in a reliable manner.
openaire +2 more sources
Nature, 1980
In normal sexual differentiation, XX germ cells develop into oocytes in an ovary, and XY germ cells undergo spermatogenesis in a testis. In some genetic abnormalities of sexual differentiation, and other abnormal situations such as experimental mouse chimaeras, XX germ cells may be present in a male embryo1,2.
openaire +2 more sources
In normal sexual differentiation, XX germ cells develop into oocytes in an ovary, and XY germ cells undergo spermatogenesis in a testis. In some genetic abnormalities of sexual differentiation, and other abnormal situations such as experimental mouse chimaeras, XX germ cells may be present in a male embryo1,2.
openaire +2 more sources
Immature oocyte retrieval with in-vitro oocyte maturation
Current Opinion in Obstetrics and Gynaecology, 1999Early studies of in-vitro fertilization used immature oocytes. The process evolved to retrieving metaphase II oocytes, and was eventually successful. At present, aggressive ovulation induction protocols are the mainstay of assisted reproductive technology programs, but not without increased cost, multiple gestations, morbidity, potential future risks ...
openaire +2 more sources
Cryoconservation: Sperms and Oocytes
1997From the moment of fertilization onwards, life processes run by the rhythm of a biological clock. The technology of cryopreservation gives us the possibility of interfering with the clockwork by stopping biological time. Cryopreservation of a cell therefore involves the cooling of a cell and storage at a temperature where all metabolic processes are ...
Van Steirteghem, Andre +2 more
openaire +3 more sources