{Reference Type}: Editorial {Title}: Understanding Cellular, Molecular, and Functional Specificity, Heterogeneity, and Diversity of the Endocannabinoid System. {Author}: Aoki J;Isokawa M; {Journal}: Cells {Volume}: 13 {Issue}: 12 {Year}: 2024 Jun 17 {Factor}: 7.666 {DOI}: 10.3390/cells13121049 {Abstract}: The endocannabinoid system (ECS) is a widely recognized lipid messenger system involved in many aspects of our health and diseases [...].