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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Brain Behav Immun. 2017 May 6;65:222–229. doi: 10.1016/j.bbi.2017.05.003

Figure 4.

Figure 4

Inhibition of mast cell degranulation decreased the number of lever presses (i.e., sign-tracking behavior), but not the number of magazine entries (i.e., goal-tracking behavior), during late stages of PCA training (Sessions 4–5) when PCA behavior fully expresses and rats are normally characterized. Cromolyn (n = 6), a mast cell inhibitor, or saline vehicle (n = 7) was infused (i.c.v.) immediately before each PCA training session. Data are presented as mean and S.E.M. ** - p < 0.01.

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