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. 2010 Mar;9(2):129–159. doi: 10.1111/j.1601-183X.2009.00540.x

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Journal compilation © 2010 Blackwell Publishing Ltd/International Behavioural and Neural Genetics Society

Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation.

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Factor scores from individual strains plotted on a set of axes each representing a factor show a behavioral profile of each strain. Although some strains exhibit different magnitudes of similar profiles, others are distinct. Axes labels represent the first eight factors: (1) injection stress-induced locomotor activity, (2) morphine withdrawal (3) morphine response, (4) reactivity, (5) locomotor activity in a novel environment, (6) conflict avoidance, (7) morphine activity duration and (8) cocaine sensitization. All strain profiles are available in supplementary figure.