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  • Title: [Changes in the electrolyte composition of the heart, liver and kidneys of the rat in pre- and postnatal ontogeny].
    Author: Denisova LA, Dolgopolova GV, Iliushko NA, Lavrova EA, Natochin IuV.
    Journal: Zh Evol Biokhim Fiziol; 1985; 21(1):13-8. PubMed ID: 3984577.
    Abstract:
    From the 19th day of embryonic period, within 4 days, i. e. up to the beginning of postnatal life, the weight of the heart in rats increases by 3.3 times, that of the liver--by 2.2 times, and kidneys--by 5.7 times, whereas the content of water (calculated per dry weight of the organs) decreases. Changes in the content of sodium, potassium, calcium and magnesium in these organs are the lowest provided calculations are made per wet weight; during organogenesis, gradual decrease in the content of electrolytes (calculated per dry weight of the tissue) takes place. The value of Na/K ratio decreases during organogenesis. The content of iron and copper in these organs is higher in adult animals, than in younger ones.
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