1. (Guzelian et al. 1992; NRC 1993). Vulnerability often depends on developmental stage. There are
2. body weight (Morselli et al. 1980; NRC 1993); the gastrointestinal absorption of lead is greatest in
3. Kearns 1997; NRC 1993; Vieira et al. 1996). Whether differences in xenobiotic metabolism make the