On reaching the capillary networks perfusing the muscle and adipose tissues, mature chylomicrons form a transient binding to the endothelial surface via their constituent apoE. The endothelium binding accommodates interaction of chylomicrons with the endothelium-bound LPL and its activation by apoC-II. This is followed by hydrolysis of the triglyceride content of chylomicrons and release of free fatty acids within the capillaries. The majority of fatty acids released diffuse into the adjacent myocytes for energy production or into adipocytes for energy storage. The remaining fatty acids are carried to distant sites by albumin and various lipoproteins. This results in formation and release of chylomicron remnants and return of the borrowed apoC and apoE to HDL before their eventual removal by the liver and other tissues via LDL receptor-related protein (LRP).