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. Author manuscript; available in PMC: 2006 Apr 10.
Published in final edited form as: Oral Microbiol Immunol. 2002 Aug;17(4):245–251. doi: 10.1034/j.1399-302x.2002.170407.x

Fig. 4.

Fig. 4

Determination of TD50 concentrations of CDT-containing extracts from A. actinomycetemcomitans. Cells were exposed to 0.0006–6.0 ng of total protein from strains UP6, UP28 and UP54 for 6 days. Upper panel, 1000 KB cells/well; lower panel, 1000 HEp-2 cells/well. Experiments were performed in six-well plates. Stained colonies were counted and data were plotted as described in the legend to Fig. 2.