PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25043687-5 2014 In the sensitive K562 and HL60 cell lines, the changes of the p38 MAPK expression after the acidification are not as obvious as that of K562/DOX cells, but the activation of extracellular signal-regulated kinase (ERK) is also observed, which indicates that the down-regulation of p38 MAPK by the intracellular acidification might be the resistant cell line specific. Doxorubicin 141-144 mitogen-activated protein kinase 1 Homo sapiens 174-211