Compared to normal glycogen, the type of bond that is decreased in Lafora bodies is Alpha 1-6 Glycosidic Bond.
Lafora normally functions as a phosphatase in normal people. If there is a mutation in the Lafora gene, there is an accumulation of covalently bound phosphates. Lafora bodes are glycogen polymers. The linkage of alpha 1-6 glycosidic bonds.