Human secreted Sialic Acid Binding Ig Like Lectin 15 (Siglec15)-Fc fusion protein, also known as CD33 Antigen-Like 3 (CD33L3) and HsT1361, GenBank Accession No. NM_213602, a.a. 20-263, fused at the C-terminus of the Fc portion of human IgG1, with C-terminal Avi-tag™ expressed in a HEK293 cell expression system. MW = 55 kDa.