The invention provides antibodies, including chimeric human antibodies, recombinant antibodies, synthetic anti-bodies, and the nucleic acids encoding them, and methods for making and using these immunoglobulins. The invention provides recombinant and synthetic polypeptide and nucleic acid embodiments of these polypeptides and/or antibodies. The invention also provides polypeptides comprising, or consisting of, consensus human framework regions, or “Independently Consensused Frameworks (ICFs)”, nucleic acids encoding them, and libraries and kits comprising these ICFs and/or antibodies of the invention, individually and in combinatorial libraries and combinations.