The obligate intracellular bacterium Orientia tsutsugamushi differentiates into a developmentally distinct extracellular state by Atwal, S, Wongsantichon, J, Giengkam, S, Saharat, K, Pittayasathornthun, YJ, Chuenklin, S, Wang, LC, Chung, T, Huh, H, Lee, S-H, Sobota, RM, Salje, J