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    J Gerontol. 1977 May;32(3):258-78.

    Pathological changes during aging in barrier-reared Fischer 344 male rats.

    Abstract

    Pathology, microbiology, and selected serum chemistries were evaluated in 144 male Fischer rats from 4 to 33 mo of age. The rats were reared and maintained under barrier conditions, which successfully excluded the introduction of major infectious disease agents throughout the entire study, including Mycoplasma pulmonis. A wide variety of pathology was found and tabulated, and many lesions were found to increase in severity and incidence with age. There was a high correlation of renal disease severity with increasing age, while alpha-1 globulin and cholesterol increased.

    PMID:
    66246
    [PubMed - indexed for MEDLINE]

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