Decreasing serum concentrations of all-trans, 13-cis retinoic acids and retinol during fasting and caloric restriction.
https://www.ncbi.nlm.nih.gov/pubmed/12603506
"RESULTS: The serum concentrations of retinol, all-trans and 13-cis retinoic acids decreased by about 20% after 5 days of fasting. After gastroplasty, the serum concentration of retinol, all-trans, 13-cis retinoic acids, retinol-binding protein and transthyretin also decreased to a similar extent after 1 month."
Decreasing serum concentrations of all-trans, 13-cis retinoic acids and retinol during fasting and caloric restriction.
https://www.ncbi.nlm.nih.gov/pubmed/12603506
"RESULTS: The serum concentrations of retinol, all-trans and 13-cis retinoic acids decreased by about 20% after 5 days of fasting. After gastroplasty, the serum concentration of retinol, all-trans, 13-cis retinoic acids, retinol-binding protein and transthyretin also decreased to a similar extent after 1 month."
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