Vitamin A (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Vitamin A" in Simple English language version.

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Chichili, Gurunadh Reddy; Nohr, Donatus; Schäffer, Michael; Lintig, Johannes von; Biesalski, Hans K. (2005-10-01). "β-Carotene Conversion into Vitamin A in Human Retinal Pigment Epithelial Cells". Investigative Ophthalmology & Visual Science. 46 (10): 3562–3569. doi:10.1167/iovs.05-0089. ISSN 1552-5783. PMID 16186334.

Anderson J, Young L. "Fat-Soluble Vitamins". Colorado State University, Cooperative Extension. Archived from the original on 17 May 2007. Retrieved 20 May 2007.

Chichili, Gurunadh Reddy; Nohr, Donatus; Schäffer, Michael; Lintig, Johannes von; Biesalski, Hans K. (2005-10-01). "β-Carotene Conversion into Vitamin A in Human Retinal Pigment Epithelial Cells". Investigative Ophthalmology & Visual Science. 46 (10): 3562–3569. doi:10.1167/iovs.05-0089. ISSN 1552-5783. PMID 16186334.

Chichili, Gurunadh Reddy; Nohr, Donatus; Schäffer, Michael; Lintig, Johannes von; Biesalski, Hans K. (2005-10-01). "β-Carotene Conversion into Vitamin A in Human Retinal Pigment Epithelial Cells". Investigative Ophthalmology & Visual Science. 46 (10): 3562–3569. doi:10.1167/iovs.05-0089. ISSN 1552-5783. PMID 16186334.
Senoo H, Imai K, Mezaki Y, Miura M, Morii M, Fujiwara M, Blomhoff R. 2012. Accumulation of vitamin A in their liver cell of arctic top predators. Anatomical Record 295 (10): 1660–8 [1]

"Dietary Supplement Fact Sheet: Vitamin A and Carotenoids". Ods.od.nih.gov. 2006-04-23. Archived from the original on 2010-08-08. Retrieved 2010-08-20.

"Dietary Supplement Fact Sheet: Vitamin A and Carotenoids". Ods.od.nih.gov. 2006-04-23. Archived from the original on 2010-08-08. Retrieved 2010-08-20.
Anderson J, Young L. "Fat-Soluble Vitamins". Colorado State University, Cooperative Extension. Archived from the original on 17 May 2007. Retrieved 20 May 2007.

Chichili, Gurunadh Reddy; Nohr, Donatus; Schäffer, Michael; Lintig, Johannes von; Biesalski, Hans K. (2005-10-01). "β-Carotene Conversion into Vitamin A in Human Retinal Pigment Epithelial Cells". Investigative Ophthalmology & Visual Science. 46 (10): 3562–3569. doi:10.1167/iovs.05-0089. ISSN 1552-5783. PMID 16186334.