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KMID : 0665219910040020133
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Korean Journal of Food and Nutrition
1991 Volume.4 No. 2 p.133 ~ p.139
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Age-Related Changes in Body Growth, Muscle Protein Content and Cellular-Mediated Immunity and Rats Fed Stock Diets
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Abstract
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This study was designed to investigate age-related changes in body composition and cell mediated immunity. Male Sprague-Dawley rats were fed stock diet ad libitum and 12 rats were sacrified at 1, 4, 6, 12 months of age.
Body weight increased sharply from 1 to 4 months, and increased steadily thereafter. The weights of liver, epididymal fat pads, and kidney increased in similar pattern as body weight, but their relative ratio to body weight decreased with age. The ratio of epididymal fat pads to body weight increased with age.
The weight of extensor digitorium longus, soleus and plantaris increased from 1 to 4 months, but it decreased at 6, 12 months. The protein content of muscles decreased or increased throughout 12 months.
The T cell proliferation response to Con A stimulation was significantly lower at 6 months than 1 momth and lower at 12 months than 6 months.
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