Research Article

Human Oral Keratinocytes Challenged by Streptococcus sanguinis and Porphyromonas gingivalis Differentially Affect the Chemotactic Activity of THP-1 Monocytes

Figure 4

The number of THP-1 cells at 18 h attracted to the lower compartment of the transwell apparatus by bacteria alone, or the HOKs challenged by S. sanguinis (Ss) or P. gingivalis (Pg) for 18 h. Controls: blank (light blue) and HOK alone (light pink). The results are obtained from three independent assays. Significant difference from the control group, and .