Figure 1:

Distinct developmental origins of brown, white, and beige adipocytes. Unlike skeletal muscle and BAT, which arise from a common Pax7⁺/Myf5⁺ stem cell lineage (left), white and beige adipocytes appear to arise from Pax7⁻/Myf5⁻ cell lineage (right). (Reprinted, with permission, from reference 12.)