Immunogen sequence: MTASAQPRGR RPGVGVGVVV TSCKHPRCVL LGKRKGSVGA GSFQLPGGHL EFGETWEECA QRETWEEAAL HLKNVHFASV VNSFIEKENY HYVTILMKGE VDVTHDSEPK NVEPEKNESW EWVPWEELPP LDQLFWGLRC LKEQGYDPFK EDLNHLVGYK GNHL; Positive Samples: Mouse spleen. Mediates the hydroly