Figure 4From: Stimulation of growth of the human gastric pathogen Helicobacter pylori by atmospheric level of oxygen under high carbon dioxide tensionLack of CO 2 induces coccoid transformation of HP cells. Hp 26695 was cultured in liquid medium for 12 h under various gas conditions. After staining with membrane-permeant SYTO 9 (green) and membrane-impermeant PI (red), cells were visualized by confocal microscopy. Data shown are representative of five independent experiments.Back to article page