Virtually all animal cells contain organelles called glycosomes which until now have been neglected in cell biology. This author recently published a comprehensive review article entitled "Glycosomes - the organelles of giycogen metabolism", Tissue & Cell 28 (3) 253-265, 1996. The review, based on biochemical and microscopy data, includes a complete history of giycogen research and the current status of knowledge

Biochemical studies on giycogen metabolism demonstrate the existence of a complex enzymatic machinery involved in giycogen synthesis and degradation, which constantly accumulates giycogen and releases glucose. Such types of cellular machineries represent cell organelles and these were already called glycosomes.