Apparatus and methods especially useful for detection of cancer using cellular, Tryptophan-associated autofluorescence are described. The apparatus includes a light source to produce a beam of light transmitted to a tissue via a two-way fiber optic bundle which, in one embodiment, is passed through a...http://www.google.ca/patents/US6405070?utm_source=gb-gplus-sharePatent US6405070 - Detection of cancer using cellular autofluorescence
