Intact Genomics 1056-12 BL21(DE3) pLysS, Chemically Competent Cells, 12 x 50µl/Unit - 13-014 | Genesee Scientific Intact Genomics 1056-12 BL21(DE3) pLysS, Chemically Competent Cells, 12 x 50µl/Unit - 13-014 | Genesee Scientific