An apoprotein a protein that is normally attached to second molecule that is not a polypeptide, from which it has become disassociated. For example: ferritin that lacks the ferric hydroxide core could be called apoferritin. Lipid supply is a determinant of apoprotein synthesis and secretion, and cholesterol may be of particular importance in initiating apoprotein synthesis. This book presents the latest research results in this field from around the globe.