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Abstract
The rate of accumulation of 14C-labeled thiourea in the aqueous humor of the anterior and posterior chambers of rabbits has been studied. The coefficients of transport by flow and diffusion and the concentration in the "secreted fluid" have been evaluated and compared with corresponding values for urea. The results demonstrate that thiourea penetrates both the iris and ciliary processes more rapidly than urea, an effect ascribed to its greater lipoid solubility