Chlamydia infection. Coloured scanning electron micrograph of a cultured human cervix cancer cell infected by Chlamydia trachomatis bacteria. At centre is an inclusion body (round) that has been ripped open, revealing hundreds of Chlamydia particles (small, round) inside.
Human epithelial cell infected with Chlamydia trachomatis (green), taken with ZEISS FE-SEM. The bacteria form an inclusion inside the cell which has been opened in this preparation to expose its interior.