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Use of the Pup as the Statistical Unit in Developmental Neurotoxicity Studies: Overlooked Model or Poor Research Design?
Albemarle Corporation, Health, Safety and Environment, Baton Rouge, Louisiana
Received December 7, 2007; accepted February 7, 2008
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Fischer et al. (2008)
report that BDE-99 (2,2'4,4',5-pentabromodiphenyl ether) and methylmercury exposure to mouse pups on postnatal day 10 disrupted spontaneous behavior, reduced habitation, and impaired learning/memory abilities. The authors employed an experimental design developed in their laboratory stating:
"[i]n this neonatal animal model each of the different treatment groups comprise mice from three to four different litters. Randomly selecting animals from at least three different litters will