PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19752309-8 2009 Complement activation was measured by quantifying the number of green fluorescent protein-AQP4-transfected HEK 293 cells permeable to the viability dye propidium iodide after exposure to patient serum and active complement. Propidium 152-168 aquaporin 4 Homo sapiens 90-94