PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 22173493-4 2011 SP cells were restored upon the removal of TGF-beta and the reversion of the cells to an epithelial phenotype, and smad3-specific siRNA reduced SP abundance in response to TGF-beta. sp 144-146 SMAD family member 3 Homo sapiens 115-120