NCIt definition : An isoflavone extract from soy, which is an inactive analog of the tyrosine kinase
inhibitor genistein. It has antioxidant and phytoestrogenic properties. (NCI);
Alternative definition : CRCH: An isoflavone with a hydroxyl group on the B-ring.; NCI-GLOSS: An isoflavone found in soy products. Soy isoflavones are being studied
in the prevention of cancer.;