Restriction patterns of PCR-amplified fragments of 16S-23S rDNA digested with Sau3AI. Lane 1, B. animalis ATCC 25527; lane 2, B. animalis ATCC 27672; lane 3, B. lactis DSM 10140; lane 4, B. animalis ATCC 27674; lane 5, B. animalis ATCC 27673; lane 6, B. animalis ATCC 27536; lane 7, B. lactis NCC 363; lane 8, B. lactis NCC 311; lane 9, B. lactis NCC 402; lane 10, B. lactis NCC 311; lane 11, B. lactis NCC 383; lane 12, B. lactis NCC 239; lanes M, 50-bp DNA ladder (Gibco BRL).