| http://www.w3.org/ns/prov#value | - ty, the former is 5 to 10 times less toxic than the latter in rats (see page 2233, left column, first paragraph).Moreover, this document relates in particular to the chemical synthesis of 22,23-dihydro-1 ,25-dihydroxyvitamin D2, i.e. 1. ,25-dihydroxyvitamin D4, in order to study the effect of unsaturation at the 22,23-position (see page 2233, left column, second paragraph).
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