Abstract

Donald T. Lysle, Kathryn E. Hoffman and Linda A. Dykstra: Evidence for the Involvement of the Caudal Region of the Periaqueductal Gray in a Subset of Morphine-Induced Alterations of Immune Status, JPET Vol. 277(3): 1533-1540, 1996.

The authors regret that the legend for figure 4 was incorrect. The legend should read as follows:

Fig. 4. Production of IL-2 (A) and IFN-γ (B) by splenocytes stimulated with Con-A after ICV microinjection of different doses of morphine. Data for IL-2 are expressed as half-maximum units (± S.E.M.) and data for IFN-γ are expressed as mean picograms per milliliter (± S.E.M.).