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Found Vitamin A 5 times.

Displaying results 1 to 10.

1. Beta carotene
A carotenoid pigment that gives a reddish color to plants such as carrots and tomatoes. It is often used as a vitamin supplement because the body can convert it into Vitamin A .

2. Carotenoid
One of a group of red, orange, purple or yellow pigments typically found as accessory pigment s in plants and some fungi . They are fat-soluble and are called lipochromes when they are found concentrated in animal fat. Carotenoids are widely used as food colorings, and one pigment, beta carotene , is used as a source of Vitamin A. Compare anthocyanin

3. Hypervitaminosis A
Poisoning due to too much vitamin A within the body. Symptoms include irritability, fatigue, changes in the skin, hair loss, headache, and abdominal discomfort.

4. Opsin
This protein binds to retinol or Vitamin A aldehyde to produce rhodopsin, the pigment in the retina that allows night vision.

5. Vitamin A (retinol, retinoic acid, antixerophthalmic vitamin)
Any chemical relative of retinol; this vitamin is the precursor of visual pigments and is vital for the differentiation of epithelial tissues. It is thought to have anticancer properties and is used to treat skin problems such as acne, wrinkling and icthyosis. This vitamin is found in liver oils and is synthesized from carotenoid s.

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