"Lactases"@en . "D001616" . "beta-Galactosidase"@en . "beta-D-Galactosidase"@en . . "lac Z Protein"@en . . "beta-D-Galactoside galactohydrolase"@en . . . "C0005220" . "beta-Galactosidase"@en . "beta-Galactosidases"@en . .