Figure 2.

Different types of adipose tissue deposits. A. WAT (white adipose tissue) is the unilocular adipose tissue with sparse mitochondria, which could be found throughout the body, and is a storage site of energy surplus. B. Beige (brite) adipose tissue is a special type of adipose tissue with multilocular lipid droplets infiltrated in WAT. C. BAT (brown adipose tissue) is multilocular and highly vascularized tissue, and has dense mitochondria that could induce energy production in the form of heat.