The work has been performed on 40 normotensive and spontaneously hypertensive rats at the age of 6 months-1 year. In all the organs studied a direct dependence between the degree of changes in the intraorganic arterial walls and a relative content of the arterial vessels in the organ tissues has been revealed. The functional changes of the arterial bed of the organs mentioned in spontaneously hypertensive rats during hypertensive phase at the stage of stable hypertension, as a result of a prolonged adaptation transform into organic ones.
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