LacZ Beta-galactosidase Beta beta-galactosidase beta-galactosidase β-galactosidase β-galactosidase Beta beta-galactosidase B-galactosidasa beta-galactosidase en.wikipedia.org Beta Beta-galactosidase Beta B-galactosidasa beta-galactosidase Beta β-galactosidase Beta beta-galactosidase Beta beta-galactosidase ref beta-galactosidase English Beta-galactosidase English beta-galactosidase beta-galactosidase beta-galactosidase Beta β-galactosidase ref beta-galactosidase Beta Beta beta-galaktosidas