(1) The excretion of acetoin and acetic acid in the urine of normal rabbits is increased by the administration of thiamine.
(2) When pyruvate is injected into normal rabbits, acetoin in the urine for a while is increased.
(3) The injection of diacetyl increases the urinary excretion of acetic acid and acetoin, but that of diacetyl together with oxalacetate decreases the urinary excretion of acetate.
(4) The injection of acetic acid increases the urinary excretion of acetoin for a time.
(5) Injection of citrate causes the increased excretion of acetate, acetoin, and pyruvate in the urine, but citrate excretion remains always unaltered.
(6) Acetate excretion in the urine is decreased by the injection of oxalacetate.
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