Extracellular cyclophilin-A stimulates ERK1/2 phosphorylation in a cell-dependent manner but broadly stimulates nuclear factor kappa B by Bahmed Karim, Henry Curtis, Holliday Michael, Redzic Jasmina, Ciobanu Madalina, Zhang Fengli, Weekes Colin, Sclafani Robert, DeGregori James, Eisenmesser Elan