Biomaterial Database

[2 boys with karyotype 46, XX]. 1980

M Vendelboe, and K Sørensen

UI	MeSH Term	Description	Entries
D007713	Klinefelter Syndrome	A form of male HYPOGONADISM, characterized by the presence of an extra X CHROMOSOME, small TESTES, seminiferous tubule dysgenesis, elevated levels of GONADOTROPINS, low serum TESTOSTERONE, underdeveloped secondary sex characteristics, and male infertility (INFERTILITY, MALE). Patients tend to have long legs and a slim, tall stature. GYNECOMASTIA is present in many of the patients. The classic form has the karyotype 47,XXY. Several karyotype variants include 48,XXYY; 48,XXXY; 49,XXXXY, and mosaic patterns ( 46,XY/47,XXY; 47,XXY/48,XXXY, etc.).	48,XXYY Syndrome,49,XXXXY Syndrome,Klinefelter Syndrome, Variants,Klinefelter's Syndrome,XXXY Males,XXY Syndrome,XXY Trisomy,Xxyy Syndrome,Klinefelter Syndromes,Klinefelter Syndromes, Variants,Klinefelters Syndrome,Syndrome, Klinefelter,Syndrome, Klinefelter's,Syndrome, Variants Klinefelter,Syndrome, XXY,Syndrome, Xxyy,Syndromes, Klinefelter,Syndromes, Variants Klinefelter,Syndromes, XXY,Syndromes, Xxyy,Trisomies, XXY,Trisomy, XXY,XXXY Male,XXY Syndromes,XXY Trisomies,Xxyy Syndromes
D008297	Male		Males
D010641	Phenotype	The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.	Phenotypes
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths