Research scientist at NIH in Bethesda. Most highly cited scientist in the world regarding the pathogen Mycobacterium tuberculosis. Avid birder and naturalist with a particular interest in sphagnum bogs from which the pathogenic mycobacteria that cause tuberculosis and leprosy likely emerged. Amateur botanist with a particular interest in orchids. Pictures loaded here are generally available in high resolution on my Flickr site at https://www.flickr.com/people/clif_barry/ - enjoy!