A new method for analysing biological samples based on their chemical makeup is set to transform the way medical scientists examine diseased tissue. When tests are carried out on a patient’s tissue today, such as to look for cancer, the test has to be interpreted by a histology specialist, and can take weeks to obtain a full result. Mass spectrometry imaging (MSI) uses technologies that reveal how hundreds or thousands of chemical components are distributed in a tissue sample. Scientists have proposed using MSI to identify tissue types for many years, but until now, no method has been devised to apply such technology to any type of tissue.
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