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. Author manuscript; available in PMC: 2012 Dec 21.
Published in final edited form as: Oral Microbiol Immunol. 1998 Dec;13(6):341–347. doi: 10.1111/j.1399-302x.1998.tb00689.x

Fig. 1.

Fig. 1

Relative invasiveness, RFLP grouping and leukotoxin production of A. actinomycetemcomitans isolates. The relative invasiveness of each A. actinomycetemcomitans isolate was calculated as a logarithmic value of the ratio of invasive ability over the negative control, H. aphrophilus. Error bars represent the standard deviation of the logarithmic value of the ratio over H. aphrophilus for each isolate. Shown below each strain is its RFLP group from I to XV and its ability to produce the leukotoxin based on the length of the lkt promoter region (Y=leukotoxic and N = nonleukotoxic).