METHOD OF MASS SPECTROMETRY

摘要

A method of identifying molecules of biological origin is disclosed. The molecutes are identified on the basis of the accurately determined mass to charge ratio of the molecules and_ at least a further physico-chemcial property such as elution time or charge state. Further physico-chemical properties may be used. The experimentally determined accurate mass and physico-chemical properties can then be compared with a look-up table- of information. The look-up table may generate physico-chemical properties of data in a conventional database, The ability to recognise and preferably identify the same molecules in two different samples may be used to determine whether a particular biological molecules has been expressed differently in an experimental sample r'elative to a control sample.