Figure 3From: Transcript-level annotation of Affymetrix probesets improves the interpretation of gene expression dataIllustration of Entities and terminologies involved in protein-protein interaction. A) Relationship among genes, transcripts, proteins and probesets. B) Two types of pairs mentioned in the text. PPI pair indicates the probeset pair correlating to a real interacting protein pair; while GGI pairs are those probeset pairs correlating to all possible cross-gene pairs. PPI may not exist in all cross-gene pairs.Back to article page