Vitamin D4 and pre-vitamin D4 (22,23-dihydroergosterol; ergosta-5,7-dienol) content of ten types of mushrooms.

aDatabase entry number from United States Department of Agriculture (USDA) National Nutrient Database for Standard Reference [53]; b Composites are combinations of samples from statisitical sampling locations in the U.S., or retail suppliers, as described in Phillips et al. [14]. Composites designated with the same capital letter were from the same supplier. c – indicates less than the limit of detection (0.1 μg/100 g fresh weight).