sentences:  Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.EMR3 expression is restricted to monocytes/macrophages, myeloid dendritic cells, and mature granulocytes in human.Transcription of the EMR3 gene results in two alternative spliced forms