Extraction of DNA from small sections of frozen tissue with simultaneous histological examination.

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Abstract
Though analysis of small sections of biopsy material by molecular techniques permits increased sensitivity, it also requires accurate histological examination of the tissue in order to reduce sampling error. A technique for the extraction of DNA from small sections of frozen biopsy material with simultaneous histological examination from adjacent sections is described that may enhance the accuracy of characterisation of the tissue, particularly where there is focal variation. The quality of the DNA obtained enables a full range of molecular studies to be carried out.