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Fig. 1. Specificity of anti-XCds1 antibody. (A) His6-XCds1 (1 ng/lane) was subjected to western blot analysis with control rabbit IgG, purified anti-XCds1 antibody, or anti-XCds1 antibody preabsorbed to His6-XCds1 (block). (B) Xenopus egg extracts were immunoprecipitated with control rabbit IgG or anti-XCds1 antibody. Western blot analysis confirmed that XCds1 protein was recovered in the immunoprecipitates with anti-XCds1 antibody (beads) but undetectable in the supernatant (sup).