Positive Samples: Mouse lung, Rat brain, Rat lung Immunogen sequence: QDKTEWKLNG QVLVFTLPLT DQVSVIKVKI HEATGMPAGK QKLQYEGIFI KDSNSLAYYN MANGAVIHLA L. This gene encodes subunit 1 of the splicing factor 3a protein complex. The splicing factor 3a heterotrim