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  • Title: Linkage analysis and construction of a congenic strain for a blood pressure QTL on rat chromosome 9.
    Author: Rapp JP, Garrett MR, Dene H, Meng H, Hoebee B, Lathrop GM.
    Journal: Genomics; 1998 Jul 15; 51(2):191-6. PubMed ID: 9722941.
    Abstract:
    A blood pressure quantitative trait locus was found (LOD = 5.0) on rat chromosome 9 using a large F2 population (N = 233) derived from Dahl salt-sensitive (S) and Dahl salt-resistant (R) rats. The F2 rats were fed 8% NaCl diet for 8 weeks. A congenic strain introgressing the R low-blood-pressure QTL allele on chromosome 9 into the S strain was constructed. The congenic strain, designated S.R(chr 9), had a lower blood pressure (19 mm Hg, P < 0.0001) and lower heart weight (112 mg, P < 0.0001) than S rats (2% NaCl diet for 24 days), proving the existence of a blood pressure QTL in the congenic region of about 21 cM.
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