Immunoglobulin Fab FragmentsDigoxinPeptide LibraryImmunoglobulin FragmentsAntibodiesSingle-Chain AntibodiesRecombinant ProteinsAntibody SpecificityCamelids, New WorldAntibody AffinityAntibodies, MonoclonalImmunoglobulin Variable RegionAntibodies, ViralAntibodies, BacterialAntibodies, NeutralizingPeptide FragmentsMolecular Sequence DataAmino Acid SequenceBinding Sites, AntibodyAntibodies, BispecificAntibody FormationCamelsEpitopesFluorescent Antibody Technique