TABLE 4.

Trends of species-specific traits within a species

TraitNo. (%) of strainsa
H. influenzae nodesH. haemolyticus nodes
A1 (n = 72)A2 and A3 (n = 16)B to E (n = 14)F (n = 95)
H2S production4 (5.6)7 (43.8)c7 (50.0)68 (71.6)
Indole production63 (87.5)10 (62.5)c10 (71.4)58 (61.1)
licA72 (100)12 (75.0)c8 (57.1)38 (40.0)
lic2A71 (98.6)9 (56.3)c3 (21.4)14 (14.7)
P6 positive70 (97.2)15 (93.7)3 (21.4)10 (10.5)
lgtC72 (100)16 (100)0 (0)b2 (2.1)
Gas production4 (5.6)1 (6.3)12 (85.7)84 (88.4)
Urease activity59 (81.9)15 (93.8)6 (42.8)71 (74.7)c
ODC activity16 (22.2)8 (50.0)c1 (7.1)7 (7.4)
  • a The nodes and the number of strains in each node are relative to those in the dendrogram in Fig. 1.

  • b Logit, 0.5 was used instead of 0 for statistical calculations.

  • c Nodes possessing a statistically significant difference (P < 0.05) for the trait on the basis of Student's t test.