Prompt gamma-ray analysis with the internal monostandard method was used to
organs taken from rats. After B or Cd was administered, the B/H and Cd/H c
ontents ratios were determined in the brain, kidney, and liver to study the
ir distribution and metabolism. Boron was distributed in all organs but met
abolized quickly. Cd was slowly accumulated in the liver and kidneys during
the 65 hours studied but no Cd was detected in the brain.