Synonyms : 45S RNP, Acute-Phase alpha 1-Protein, Slow alpha 2-Globulin, alpha 1-Acute Phase Globulin, alpha 1-Acute Phase Protein, alpha 1-Macroglobulin, alpha 2-Acute Phase Globulin, alpha 2-Glucoprotein, alpha 2-Macroglobulin, alpha-Macrofetoprotein, alpha2-Macroglobulin