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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Crit Rev Toxicol. 2014 Aug;44(7):600–617. doi: 10.3109/10408444.2014.926306
kelac = the elimination rate in the maternal animal during lactation (days−1);
CRmilk ,t = the time-dependent rate at which offspring ingest milk (kg/day);
fmbm = the fraction of fat in milk (dimensionless);
LS = litter size; and
BWmat = body weight of the maternal animal (kg).