Immunogen sequence: KESRAKKFQR QHMDSDSSPS SSSTYCNQMM RRRNMTQGRC KPVNTFVHEP LVDVQNVCFQ EKVTCKNGQG NCYKSNSSMH ITDCRLTNGS RYPNCAYRTS PKERHIIVAC EGSPYVPVHF DASVEDST; Positive Samples: Mouse pancreas. Endonuclease that catalyzes the cleavage of RNA on the 3'