PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23371559-2 2013 When mature human interleukin 7 (hIL-7) was expressed as a secretory protein in rice endosperm by ligating the N terminal glutelin signal peptide and the C terminal KDEL endoplasmic reticulum (ER) retention signal to the hIL-7 cytokine to improve production yield, this protein accumulated at levels visible by Coomassie Brilliant Blue staining. coomassie Brilliant Blue 311-335 interleukin 7 Homo sapiens 33-38