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LONDON |
Thu Mar 8, 2012 3:31am IST
(Reuters) - Taking a sample or biopsy from just one part of a tumor
might not give a full picture of its genetic diversity and may explain
why doctors, despite using genetically targeted drugs, are often unable
to save patients whose cancer has spread, scientists said.
A study by British researchers
found there are more genetic differences than similarities between
biopsies taken from separate areas of the same tumor, and yet further
gene differences in samples taken from secondary tumors......