Pro-vitamin (Ergosterol) + ultra-violet light = vitamin d (anti-rachitic) : Vitamin D in the 'Allenburys' foods.

Date:
[between 1930 and 1940?]

Licence: In copyright

Credit: Pro-vitamin (Ergosterol) + ultra-violet light = vitamin d (anti-rachitic) : Vitamin D in the 'Allenburys' foods. Source: Wellcome Collection.

no text alternative