X-Message-Number: 10978
Date: Sun, 27 Dec 1998 17:33:06 -0800 (PST)
From: "Joseph J. Strout" <>
Subject: immortal mice?

In message 10976, Tim Freeman <> wrote:

>Also in the feeling-certain-but-no-evidence category is an article
>about a breed of mice at the National Institute of Health that have a
>half life instead of showing aging.  When I saw the email (or had the
>delusion) I even typed in a reference: Growth Development and Aging,
>pp. 17-22, volume 56, 1992.

Here's the full reference:
Burger J; Gochfeld M.  Survival and reproduction in Peromyscus leucopus in
the laboratory: viable model for aging studies. Growth, Development, and
Aging, 1992 Spring, 56(1):17-22.

Abstract: White-footed mice Peromyscus leucopus reared in our laboratory from
    wild-caught parents lived at least to 5.5 years. Once past weaning, over
    80% of the mice lived at least until two years. Females maintained a
    constant weight whereas the weight of males increased until four years and
    decreased thereafter. At four-years of age both sexes bred successfully
    with mates of the same age, but had lower success with younger mice. Some
    males and females reproduced at five years of age.

(The abstract is so brief, I hope this will fall under the "fair use" policy.)

-- Joe

|    Joseph J. Strout           developer: MacOS, Unix, 3D, AI     |
|                 http://www.strout.net              |

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