Anti-RASA antibodies enable researchers to detect and measure the RASA antigen in biological samples. This target is a reported synonym of the RASA1 gene, which encodes RAS p21 protein activator 1. This protein is known to function in intracellular signal transduction and cell division, among other biological roles. The human version of RASA has a canonical amino acid length of 1047 residues and a protein mass of 116.4 kilodaltons, although 4 isoforms have been identified. It is reported to be localized in the cytoplasm of cells and notably expressed in the placenta, fallopian tube, and bronchus. Other names for this target antigen include CM-AVM, CMAVM, and CMAVM1. These RASA antibodies are widely used in Western Blot experiments, among other applications.