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Klinefelter syndrome is not an inherited condition. The extra X chromosome comes from the mother in approximately 50% of the cases. Maternal age is the only known risk factor. Women at 40 years have a four-times-higher risk of a child with Klinefelter syndrome than women aged 24 years. [15] [35] [36]
It can be considered a form or variant of Klinefelter syndrome (47,XXY). [11] Individuals with this syndrome are typically mosaic, being 49,XXXXY/48, XXXX. [4] It is genetic but not hereditary, meaning that while the genes of the parents cause the syndrome, there is a small chance of more than one child having the syndrome.
Sertoli cell-only syndrome (SCOS), also known as germ cell aplasia, is defined by azoospermia where the testicular seminiferous tubules are lined solely with sertoli cells. [2] Sertoli cells contribute to the formation of the blood-testis barrier and aid in sperm generation.
Harry Fitch Klinefelter Jr. (/ ˈ k l aɪ n f ɛ l t ər /; March 20, 1912 – February 20, 1990) was an American rheumatologist and endocrinologist. Klinefelter syndrome is named after him. Biography
Down syndrome is also referred to as trisomy 21. Other numerical abnormalities discovered include sex chromosome abnormalities. A female with only one X chromosome has Turner syndrome, whereas a male with an additional X chromosome, resulting in 47 total chromosomes, has Klinefelter syndrome.
The estimated average cost per IVF cycle is about $12,000, according to the American Society for Reproductive Medicine (ASMR). But gynecologist Karen Tang, M.D., previously told USA TODAY that it ...
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An enlargeable map of the 58 counties of the state of California. This is a list of hospitals in California (), grouped by county and sorted by hospital name. In healthcare in California, only a general acute care hospital or acute psychiatric hospital, as licensed by the California Department of Public Health, can be referred to as a "hospital."