Hybrid antibodies and/or hybrid antibody fragments and methods of making them are provided. In one embodiment the hybrid antibodies and/or hybrid antibody fragments contain heavy and/or light variable regions that contain two or more framework regions derived from at least two antibodies. In another embodiment, at least two of the framework regions are classified in the same germline gene family In one embodiment, at least two framework regions are classified in the same germline gene family member The hybrid antibodies or hybrid antibody fragments may contain human framework regions and nonnhuman CDRs.
