Anti-CSF1R antibodies detect the protein encoded by the gene 'colony-stimulating factor 1 receptor' in humans, which is also known as CD115, C-FMS, FIM2, FMS, M-CSFR, and BANDDOS. Structurally, the protein is reported to be 108 kilodaltons in mass. Based on gene name, canine, porcine, monkey, mouse, and rat orthologs may also be found.