The resulting recombinant clone is expressed in a mammalian host cell line (i.e., human kidney cell line 293H), and the resulting recombinant immunoglobulin is analyzed for binding to Fc??R using any standard assay known to those in the art, including but not limited to ELISA and FACS. Molecules of the present invention (e.g., antibodies, fusion proteins, conjugated molecules) may be characterized