The book focuses on the latest discoveries on calreticulin, calnexin and other endoplasmic reticulum proteins. Calreticulin has been implicated to affect diverse cellular function and play a role in many pathologies including protein folding disorders, cardiac pathologies, cancer and autoimmunity. This book contains contributions from the world leaders in the area of endoplasmic reticulum function, protein folding, Calcium homeostasis and autoimmunity. It raises many intriguing questions about calreticulin, calnexin and the endoplasmic reticulum and gives a unique opportunity to realize the significance of these calcium-binding chaperones. The book is unique in every respect and we are not aware of any other publication focusing on these aspects of endoplasmic reticulum biology. Because of a central role of endoplasmic reticulum, calreticulin and calnexin in virtually all cellular functions, the book should be of interest to everyone in the biological sciences.