Predicted to be involved in T cell extravasation; homotypic cell-cell adhesion; and positive regulation of neutrophil extravasation. Predicted to act upstream of or within myeloid dendritic cell activation. Predicted to be located in cell surface. Predicted to be integral component of plasma membrane. Orthologous to human CD99 (CD99 molecule (Xg blood group)). [provided by Alliance of Genome Resources, Apr 2022]