Subcellular locations: Secreted
Expressed at high levels in fetal inner ear and heart. Low levels in fetal skeletal muscle, kidney, spleen and colon. Not detected in fetal liver, lung, brain, nor in fetal stomach. In adult tissues, highest levels in brain, kidney, heart and retina. Relatively low levels in lung, spleen and duodenum. Not detected in adult skeletal muscle, liver, nor testis.