PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20167328-2 2010 For identical PEO/PPO ratios, copolymers with lower molecular weight show a larger increase in the cloud point in the presence of surfactants than polymers with higher molecular weight. copolymers 30-40 protoporphyrinogen oxidase Homo sapiens 18-21