A low number of microglia cells were found in the repopulated matrices from the 6-OHDA-lesioned mice. Microglia cells were seeded onto the striatal decellularized matrices of the control animals (CTRL) and of the contralateral and ipsilateral hemispheres of saline and 6-OHDA-lesioned mice (SAL CT, SAL IP, PD CT, and PD IP, respectively). In addition, microglia cells were seeded onto 2D surfaces (with and without LPS stimulation). The number of microglia cells were counted after 48 h in culture. Values are shown as a box indicating the minimum, maximum, and mean values together with the SEM. Welch’s ANOVA followed by Games Howell post hoc test was performed (# p < 0.05 and ## p < 0.001). Outliers are marked with the symbols ° and *. The sampling distribution was tested for normality using the Shapiro−Wilk test and for homogeneity of variances using the Levene’s test.