| http://www.w3.org/ns/prov#value | - Oily fish such as trout, herring, and catfish contain more vitamin D than any other nonfortified food: A 3.5-ounce serving of cooked salmon provides 360 IU; a similar portion of cooked mackerel supplies 345 IU, while sardines canned in oil give you 250 IU per 1.75 ounces.
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