... interaction without affecting CXCL12chemotaxis activity. Biochim Biophys Acta 1780,914–920.43 Tamamura H, Imai M, Ishihara T, Masuda M,Funakoshi H, Oyake H, Murakami T, Arakaki R,Nakashima ... ofthe antibodies expressed as libraries on phage hasevolved from Fab fragments to single-chain antibodyfragments and, finally, to heavy chain variable regionAbbreviationsECL, extracellular loop; ... of a CXCR4 antagonist from a human heavychain CDR3-derived phage libraryAndy Chevigne´1, Aure´lie Fischer1, Julie Mathu1, Manuel Counson1, Nadia Beaupain1,Jean-Marc Plesse´ria1,...