Table 2. Fixed difference and shared polymorphisms between a set of 98 genes from seven species groups of Neisseria.

Figures above the diagonal are fixed differences, those below are shared polymorphisms. Numbers of isolates are shown in parentheses. Nmu, N. mucosa; Nsu, N. subflava; Npo, N. polysaccharea; Nme, N. meningitidis; Ngo, N. gonorrhoeae; Nla, N. lactamica; Nci, N. cinerea. The divergent strains for which there is only one example (N. mucosa var. heidelbergensis CCUG 26878 T, N. polysaccharea 15883, N. elongata subsp. glycolytica ATCC 29315, N. bacilliformis CCUG 50858 T, N. dentiae CCUG 53898, N. weaveri CCUG 4007 T and N. canis CCUG 56775 T) have been excluded from this analysis.

Species group	Nmu	Nsu	Npo	Nme	Ngo	Nla	Nci
Nmu (8)*		4493	4218	5015	6249	5169	4418
Nsu (13)†	2585		4907	5864	7112	5871	4893
Npo (5)	1642	2202		511	1738	1231	1237
Nme (5)	1227	1611	2209		1745	2065	2578
Ngo (6)	67	67	115	103		3439	4059
Nla (5)	1028	1383	1956	1321	82		2706
Nci (6)	1664	2303	2314	1555	96	1321

^*This group includes N. mucosa, N. sicca and N. macacae.

^†This group includes isolates defined as N. subflava, N. perflava, N. flava and N. flavescens.