Immunogen sequence: TYSQEGYDRS STMLTLGPFR NSNLTELGLQ EIKTIGYTSP RSRTEVNRQC PGEKEPVSDL QLGLDAVEPT ALHKTLETPA HDRAEPNSQL DSTH Highest antigen sequence identity to the following orthologs: Mouse - 87%, Rat - 89%. The mixed lineage leukemia (MLL) gene family