In case you missed this manuscript on in vitro and in vivo LD50
modeling. 

Richard Beger
Branch Chief, Center for Metabolomics
Division of Systems Toxicology
National Center for Toxicological Research
3900 NCTR Road
Jefferson, AR 72079
Richard.Beger at fda.hhs.gov
(work) 870-543-7080
(FAX) 870-543-7686
 
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