DRD1 and infection: We found that similar to what we obtained following the infection of the virus in the DMS of Drd1-Cre-Ai14 mice, Fyn protein level was reduced in Drd2-Cre-Ai14 mice infected with Ltv-FLEX-shFyn compared to animals infected with Ltv-FLEX-SCR [Figures 5D–F; F(1, 16) = 26.06, p < 0.001].