FIG. 1.

Dual infection of nonfusing (A) and fusion-competent (B) C. trachomatis strains cultured in HeLa cells and fixed for microscopy 30 h p.i. Within the nonfusing inclusions, serovar J_(s) (green developmental forms) and serovar K_(s) (blue developmental forms) remain segregated in individual vacuoles. Consistent with results of Ridderhof and Barnes (13), developmental forms of wild-type J (green) and K (blue) cells can be found within a single inclusion (arrows). The bar in panel B indicates 10 μm for both panels.