Mouse TREM2, also known as Triggering receptor expressed on myeloid cells 2 and Trem2a, GenBank Accession No. NM_031254, a.a. 19-168, fused at the C-terminus to the Fc portion of Human IgG1 and with a C-terminal Avi-tag, expressed in a Hek293 expression system. MW=45 kDa.