rep-PCR patterns of Lactococcus lactis wild and reference strains. Lane 1, M78 (wild Nis+ strain); lane 2, M104 (wild Nis+ strain); lane 3, L. lactis subsp. cremoris 1L8; lane 4, L. lactis subsp. cremoris LMG 6897T; lane 5, L. lactis subsp. lactis CNRZ 1075; lane 6, L. lactis subsp. lactis LMG 6890T; lane 7, L. lactis subsp. lactis CNRZ 301; lane 8, L. lactis subsp. lactis CNRZ 125; lane 9, L. lactis subsp. lactis CNRZ 258.