The Chlamydia trachomatis Plasmid and CT135 Virulence Factors Are Not Essential for Genital Tract Infection or Pathology in Female Pig-Tailed Macaques. - Patton DL; Sweeney YC; Baldessari AE; Cles L; Kari L; Sturdevant GL; Yang C; Caldwell HD (Infection and immunity, 2018)