Zymo Research X1001-25 X-GAL (5-bromo-4-chloro-3-indolyl ß-D-galactopyranoside), Zymo Research, 5 x 5ml/Unit - 11-729 | Genesee Scientific Zymo Research X1001-25 X-GAL (5-bromo-4-chloro-3-indolyl ß-D-galactopyranoside), Zymo Research, 5 x 5ml/Unit - 11-729 | Genesee Scientific