Lac operon
[bn] ল্যাক অপারন
[bs] Lac operon
[ca] Operó lac
[cs] Lac operon
[de] Lac-Operon
[es] Operón lac
[et] Lac-operon
[eu] Laktosaren operoia
[fa] اپران لک
[fr] Opéron lactose