| Antigen | For WB positive control (#IGFBP31-C), Human IGFBP-3 (264-aa, mol wt ~29 kDa) was expressed in E. coli and purified
(>95%). For Western blot +ve control (Cat # IGFBP31-C) is supplied in SDS-PAGE sample buffer (reduced). Load 10 ul/lane of IGFBP31-C for good visibility with antibody Cat # IGFBP31-S |