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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: Neurotoxicol Teratol. 2011 Jan 28;33(3):405–414. doi: 10.1016/j.ntt.2011.01.003

Figure 6.

Figure 6

(A) Lever presses across six 5-day blocks of testing for the middle-age group by treatment dose. (B) Lever presses across six 5-day blocks of testing for the old age group by treatment dose.