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    Science. 1991 Dec 20;254(5039):1805-8.

    Isolation of an active human transposable element.

    Source

    Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21205.

    Abstract

    Two de novo insertions of truncated L1 elements into the factor VIII gene on the X chromosome have been identified that produced hemophilia A. A full-length L1 element that is the likely progenitor of one of these insertions was isolated by its sequence identity to the factor VIII insertion. This L1 element contains two open-reading frames and is one of at least four alleles of a locus on chromosome 22 that has been occupied by an L1 element for at least 6 million years.

    PMID:
    1662412
    [PubMed - indexed for MEDLINE]

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