ApoB-containing lipoproteins promote infectivity of chlamydial species in human hepatoma cell line

Figure 4 HepG2 cells. Direct immunofluorescence with FITC-conjugated antibody against chlamydial LPS. HepG2 cells were infected with inoculants containing: A: No chlamydial particles, B: C. trachomatis alone; C: C. trachomatis preincubated with native Apo-B containing lipoproteins; D: C. pneumoniae alone; E: C. pneumoniae preincubated with native Apo-B containing lipoproteins. Immunofluorescence protocol is detailed in Materials and Methods. Original magnification × 40.