Biosynthesis of ergosta-4,6,8(14),22-tetraen-3-one. In vivo incorporation of a 1,4-dioxide.
D008722:Methods; D010407:Penicillium / Q000378:metabolism; D014316:Tritium; D014807:Vitamin D / Q000096:biosynthesis*
D014316:Tritium; D014807:Vitamin D