[Micro-Raman spectra for lipids in colorectal tissue].

Confocal Raman microscopy system was used to investigate the etiology of colorectal cancer at the molecular level. A total of two hundred and thirty four micro-Raman spectra were measured from thirty nine patients for surgically resected colorectal cancer specimens and adjacent normal tissues in the region 900-2 100 cm(-1). Two bands at 1 064 and 1 134 cm(-1) which are attributed to the all-trans bond stretching vibrations of the C-C lipid skeleton decreased in colorectal cancer tissue samples.