treatment regress pure_ethanol_16x yes pure_ethanol_16x yes pure_ethanol_16x yes pure_ethanol_16x yes pure_ethanol_16x no pure_ethanol_16x no pure_ethanol_16x no pure_ethanol_16x no pure_ethanol_16x no pure_ethanol_16x no pure_ethanol_16x no pure_ethanol_16x no pure_ethanol no pure_ethanol no pure_ethanol no pure_ethanol no pure_ethanol no ethyl_cellulose yes ethyl_cellulose yes ethyl_cellulose yes ethyl_cellulose yes ethyl_cellulose yes ethyl_cellulose yes ethyl_cellulose no