منابع مشابه
A case of penta X syndrome caused by nondisjunction in maternal meiosis 1 and 2
The prenatal abnormalities in patients with penta X syndrome appear late in pregnancy and are nonspecific. In contrast, the postnatal phenotype is well described although new findings are still revealed. Penta X syndrome is a result of successive nondisjunctions of the X chromosomes in both maternal meiotic divisions.
متن کاملNXAl(3)+ (X = N, P, As): penta-atomic planar tetracoordinate nitrogen with N-X multiple bonding.
Planar tetracoordinate nitrogen (ptN) has been successfully extended as a new branch of planar chemistry. As the simplest type of ptN, penta-atomic species (pptN, e.g., NAl(4)(-)) are known to have a "delocalized" molecular environment with a single bond between the central N and the ligand. In this paper, through an extensive isomeric search of a series of group V-based systems NXAl(3)(+) (X =...
متن کاملThe fragile X syndrome.
We have begun to appreciate that the extent of this disorder is much wider than merely mental retardation. It is also a common cause of learning and emotional problems in mildly affected female carriers with normal IQs. These children present an enormous challenge to all child-care providers, be they in medicine, education, or in various therapy disciplines. Early identification is essential, a...
متن کاملdiethylenetriamine penta-acetic acid
The chelating agent diethylenetriamine penta-acetic acid was used to measure iron stores in 83 patients with chronic liver disease. Iron chelation was normal in patients with chronic cholestasis. Chelation was increased above the control range in 14 out of 26 patients with alcoholic cirrhosis, in nine out of 28 patients with non-alcoholiccirrhosis, and in 11 out of 15 cirrhotics with a portacav...
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ژورنال
عنوان ژورنال: Journal of Medical Genetics
سال: 1980
ISSN: 1468-6244
DOI: 10.1136/jmg.17.5.392