Figure 1. A, Negative stain electronmicrograph of Waddlia malaysiensis elementary bodies. B–D, Thin-section electronmicrographs of cells infected with W. malaysiensis. B, large inclusion with elementary(e) and reticulate(r) bodies in HEK cells 72 h postinfection. C, a large inclusion in EBV-transformed human B-lymphocytes. D, dividing reticulate bodies in HEK cells 48 h postinfection in an inclusion with numerous surrounding mitochondria (arrow).