Complex sentence: However, LDL particles have a half-life of only a couple of days, and their content (LDL particles carry cholesterol, cholesteryl esters, and tryglycerides from the liver to the tissues of the body) changes with time.
Split into simpler sentences: However, LDL particles have a half-life of only a couple of days. And their content (LDL particles carry cholesterol, cholesteryl esters and tryglycerides from the liver to the tissues of the body) changes with time.