**2. Microscoby**

Microscopy has been a diagnostic tool for TB for over a century, and still currently the most rapid diagnostic method. Standard light microscopy (LM) and fluorescent microscopy (FM) are common methods. The recent development of light emitting diodes (LED), with the ap‐ propriate fluorescent light output for FM and low power consumption, has led to the devel‐ opment of simple, robust LED FM microscopes, requiring minimal mains or battery power and no dark room requirement. The WHO has recommended rolling it out as an alternative to LMs in resource-limited settings, based on studies that have shown comparable perform‐ ance of LM and standard FM systems [4,5].

© 2013 Senol; licensee InTech. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2013 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
