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Integrin expression in HRA-19, human colorectal cancer cells. Western blot analysis of β1(A) and α2(B) integrin expression in lysates of HRA-19 cells. C, surface expression of α2β1 integrin in HRA-19 cells, demonstrated by biotinylation, lysis, and immunoprecipitation with antibodies to β1, α2, and α2β1 integrin. Biotinylated proteins were detected with streptavidinHRP.
