UniGene/UniProt composition after annotation. For the amount of reporters that were annotated with either a UniProt or a UniGene ID, only the UniProt description was compared with the description given by the array manufacturer. For the Agilent array the comparison was mainly done by comparing gene names and their synonyms. The results of this comparison are displayed in the right-half of figures A and B. The descriptions were checked if they were identical, if they belonged to a different family member, if the new annotation gave a more detailed description or if they both referred to something completely different. Reporters that were confirmed were also screened for specificity (i.e. specific for that gene or not). (A) For Incyte we were able to identify 72.6% of all features. A very small part of the clones (1.4%) did not correspond with the new annotations. (B) For Agilent, a large number of features associated with a protein ID correspond with the Agilent Annotation (26.5%), while 1.3% were annotated as different.