Study of Possible Correlations between Body Weights and Brain Parameters in Neonatal and Mature Rats

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Abstract
Correlations between body weight, cerebral weight, cerebral DNA (cell number) and cerebral protein have been studied in a population of 249 neonatal (29 litters) and 107 adult normal rats. It was found that, on a statistical basis, an individual with a heavier neonatal body weight is also likely to have a higher cerebral weight, neonatal cerebral DNA (cell number) and neonatal cerebral protein. For a sample of this size, each pair of these parameters was significantly correlated. In adult animals the significance of correlations with body weights disappears, but the correlations between each pair of cerebral parameters remain significant.

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