PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9263742-3 1997 was administered over 2 h. NHE activity was measured by quantifying cytosolic pH (pHi) recovery following acidification of the cells with propionic acid and by pH clamping at various pHi values between 7.2 and 5.8 using nigericin. Nigericin 220-229 solute carrier family 9 member C1 Homo sapiens 27-30