Susceptibility to Mbo1 and Sau3A digestion and distribution of the genes in the restriction-modification cassette in selected L. monocytogenes strains.

+: cut; − uncut; P: presence and A: absence of hybridization signals with the gene specific probe.+: 酶切；−：未酶切；P：存在与基因特异性探针（gene specific probe）对应的杂交信号，A：不存在该杂交信号。