Abstract
Summary
The influence of dl-aldosterone. 2-methyl-9α-fluorohydrocortone, prednisone and prednisolone upon osmotic pressure of fluids inside of isolated frog skin pouches in a Ringer bath was tested. A considerable increase of osmolarity and increase in total fluid volume as the result of the action of the first 2 steroids was observed. The sodium and potassium concentrations remained unchanged. The significance of this observation was briefly discussed in terms of appearance of osmotically active material from the skin under the action of certain steroids.
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