ELN and breast neoplasm: In thiswork, we aimed to test whether elastin-like recombinamers(ELRs) could be suitable biomaterials to mimic the breast tumor ECM.ELRs are fabricated through recombinant technology to mimic elastin,an ECM component, and are formed by repetitions of the sequence VPGXG(V being valine, P being proline, G being glycine, and X being anyamino acid except l-proline).