1. A Current History of Calreticulin.- 2. Basic Characteristics and Ion Binding to Calreticulin.- 3. The Intracellular Distribution and Expression of Calreticulin.- 4. The Roles of Calnexin and Calreticulin as Endoplasmic Reticulum Molecular Chaperones.- 5. Calreticulin and Ca2+ Storage.- 6. Calreticulin and the Modulation of Gene Expression.- 7. Role of Calreticulin in Rubella Virus Replication.- 8. Calreticulin and Autoimmunity.- 9. Calreticulin in T. Lymphocytes.- 10. Calreticulin and Thrombosis.- 11. Calreticulin in Vector Arthropods-The Secreted Calreticulin.- 12. Protein Nuclear Import Is Modulated by Calreticulin.