Abstract
Hydrazine excretion by the mamalian kidney involves glomerular filtration, tubular reabsorption, and secretion. It is reduced by elevation of urine pH. Hydrazine reabsorption exhibits the characteristics of a diffusion-mediated process: it is independent of the plasma concentration or the filtered load of hydrazine and is reversibly and linearly decreased by mannitol diuresis. The secretion process has a limited capacity for hydrazine transport and is inhibited by 2, 4-dinitrophenol and, to a small extent, by thiamine.

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