Macrophage (red) engulfing tuberculosis bacteria (yellow), taken with ZEISS FE-SEM. Courtesy of Dr. Volker Brinkmann, Max Planck Institute for Infection Biology, Berlin/ Germany.
What you can see here is the body trying to cure itself. The yellow cigar shaped objects are tuberculosis bacteria. Around it is macrophage. A macrophage is a phagocyte, and these are the cells that protect us by attempting to ingest and harmful foreign objects. The name comes from the Greek phagein – to devour and the word cyte which denotes a cell in biology.