“…Even for chemicals well known to target human reproductive system, such as 1,2-dibromo-3-chloropropane, a health-based guidance value related to observed effects in humans is difficult to derive. Most available data came from occupational settings, in case of 1,2-dibromo-3-chloropropane, from cohorts of workers exposed to this nematocide during production at factories (Potashnik et al, 1978;Whorton et al, 1979), and from cohorts of applicators and farmers (Glass et al, 1979;Sandifer et al, 1979) and actual levels of exposure were not established. Animal studies intended to investigate reproductive effects should follow certain protocols that were outlined elsewhere (EPA, 1991(EPA, , 1996(EPA, , 1998FDA, 1993).…”