PE-Labeled Human Mesothelin (296-580) Protein, His Tag (MSN-HP2H5) is produced via site-specific conjugation of PE to Human Mesothelin (296-580), His Tag under optimal conditions with a proprietary technology. Human Mesothelin (296-580), His Tag is expressed in HEK293 cells containing AA Glu 296 - Gly 580 (Accession # AAH09272).