Provitamin A2: electroretinographic measurements of its effect on photopic sensitivity in chicks.
D000818:Animals; D004596:Electroretinography; D008027:Light; D011200:Poultry; D012160:Retina / Q000502:physiology* / Q000528:radiation effects*; D014801:Vitamin A / Q000494:pharmacology*
D014801:Vitamin A