Abstract
Summary and Conclusions
1) Concentration of hexosamine in whole rat skin is relatively unaffected by animal age, although the amount of this material relative to total tissue protein is progressively decreased with increasing body weight up to 330 g. Both the total and relative concentrations of hydroxyproline in rat skin are increased with animal weight up to 280 or 240 g respectively. Above this weight class the amount of hydroxyproline decreased slightly. Total tissue nitrogen parallels these changes. 2) Above 330 g however, the relative hexosamine concentration increases with body weight. The effect of body weight upon the ratio of hexosamine to hydroxyproline closely parallels the response of relative concentration of hexosamine to rat age.
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