Clams (Saxidomus giganteus) are able to transform injected cholesterol-4-C14into radioactive 24-methylenecholesterol in vivo. The highest rate of conversion was observed when the radioactive sterol was injected into the digestive gland. The findings suggest a possible pathway in the biosynthesis of C28-sterols and throw some light on the question of the origin of C28-sterols in lamellibranchs.
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Fagerlund et al. (1961) studied this question.
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