منابع مشابه
Why are thalassaemia patients born when prenatal screening is available?
Thalassaemia major is a classic example of a disease that is preventable by prenatal diagnosis. Although the technology was introduced to Hong Kong more than a decade ago, new patients are continuously seen in the Hong Kong Administrative Region. This retrospective review concerns children who were diagnosed to have severe beta-thalassaemic syndromes at the Tuen Mun Hospital from 1990 to 1996. ...
متن کاملAlu-containing exons are alternatively spliced.
Alu repetitive elements are found in approximately 1.4 million copies in the human genome, comprising more than one-tenth of it. Numerous studies describe exonizations of Alu elements, that is, splicing-mediated insertions of parts of Alu sequences into mature mRNAs. To study the connection between the exonization of Alu elements and alternative splicing, we used a database of ESTs and cDNAs al...
متن کاملWhen Are New Hippocampal Neurons, Born in the Adult Brain, Integrated into the Network That Processes Spatial Information?
Adult-born neurons in the dentate gyrus (DG) functionally integrate into the behaviorally relevant hippocampal networks, showing a specific Arc-expression response to spatial exploration when mature. However, it is not clear when, during the 4- to 6-week interval that is critical for survival and maturation of these neurons, this specific response develops. Therefore, we characterized Arc expre...
متن کاملHow we are born.
Human reproduction is relatively inefficient. Nearly 30% of pregnancies result in spontaneous losses, which are both a clinical problem and a psychological stress to the families involved. Furthermore, although the human population is growing rapidly and is predicted to reach 9 billion by 2050, 15% of couples worldwide are childless because of infertility. Many underlying causes of infertility ...
متن کاملOrigins and impacts of new mammalian exons.
Mammalian genes are composed of exons, but the evolutionary origins and functions of new internal exons are poorly understood. Here, we analyzed patterns of exon gain using deep cDNA sequencing data from five mammals and one bird, identifying thousands of species- and lineage-specific exons. Most new exons derived from unique rather than repetitive intronic sequence. Unlike exons conserved acro...
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ژورنال
عنوان ژورنال: Heredity
سال: 2009
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.2009.62