Tanis, A.A.

glycogen liver breath study glucose group enrichment 13 c enrichment breath co 2 liver glycogen carbohydrate 13 c-enrichment c-enriched oxidation muscle 13 c-enriched diet liver glycogen pool patient 13 c-enriched carbohydrate liver glycogen oxidation fasting c-enrichment plateau muscle glycogen 13 c abundance abundance period 13 co 2 subject level cirrhosis baseline result metabolism chapter hepatic postprandial plateau phase value african group protein production cycling gluconeogenesi baseline time labelling glucagon difference breath test basal insulin curve figure control exercise method day 2 african ratio glucose production increase control group european co 2 pool energy volunteer european group model phase sample sugar protocol contribution return pathway condition blood atom percent store measurement