Biosynthesis of the phytosterol side chain.
D000079:Acetaldehyde / Q000096:biosynthesis*; D010944:Plants / Q000378:metabolism*; D013261:Sterols / Q000096:biosynthesis*; D014807:Vitamin D / Q000096:biosynthesis*
D013261:Sterols; D014807:Vitamin D; D000079:Acetaldehyde