Siglec-2/CD22 Protein mediates B-cell B-cell interaction and may be involved in the localization of B-cells in lymphoid tissues[1]. Siglec-2/CD22 Protein, Mouse (AAA02562.1, HEK293, His) is the recombinant mouse-derived Siglec-2/CD22 protein, expressed by HEK293 , with C-6*His labeled tag.