title: Phagocytosis and avirulent Treponema pallidum.
mesh_terms: D000818:Animals; D002245:Carbon Dioxide / Q000378:metabolism; D002247:Carbon Isotopes; D046508:Culture Techniques; D008264:Macrophages; D008854:Microscopy, Electron; D010587:Phagocytosis; D011817:Rabbits; D014210:Treponema pallidum
chemical_list: D002247:Carbon Isotopes; D002245:Carbon Dioxide