Chronic lead exposure induces ultrastructural alterations in the monkey testis.

The purpose of this study was to establish the effects of lead on the non-human primate testis. Sixteen cynomolgus monkeys maintained in environmentally controlled conditions were administered 1500 micrograms lead acetate/kg bw/day in gelatin capsules. Monkeys were randomly assigned to the following groups: control (n = 3), which received 95% glycerol and 5% distilled water (vehicle) over their lifetime for 9 years; infancy group (n = 4), …