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. Author manuscript; available in PMC: 2016 Mar 24.
Published in final edited form as: Microsc Res Tech. 2003 Feb 15;60(3):360–368. doi: 10.1002/jemt.10274

Fig. 4.

Fig. 4

Ten groups of three size-matched crayfish were randomly selected: two crayfish were placed in an observation aquarium and allowed to interact for 24 hours, while the third individual served as a control. Following determination of social status 5-HT and dopamine in individual central nervous system segments were measured using HPLC-ED. Kruskal Wallis analysis of variance (α= 0.05) revealed no significant differences in 5-HT (illustrated above) or dopamine (results not shown) content for dominant, subordinate, or control crayfish across any individual central nervous system tissues.