AKG are glycerol ether lipids that are naturally occurring in hematopoietic (blood forming) organs such as spleen, liver, bone marrow.
They can also be found in neutrophils and in human and cow milk. a specific type of white blood cell, important in the defence against bacteria.

Scandinavian folk medicine used shark liver oil to treat cancer and other ailments based on the rarity of tumors in sharks and their ability to withstand infection. Shark liver oil is a source of alkylglycerols that have been studied in several clinical studies as an anti-cancer agent. In addition, alkylglycerols have been studied for the treatment of radiation-induced side effects and for their ability to strengthen the immune system. Some studies support that AKG could be a new therapeutic in the future. Studies would show that AKG can significantly reduce radiation toxicity injuries, improving overall survival and survival time in irradiated cervical cancer patients. SLO is the main source of AKG, glycerol-ether lipids that have been widely used in Scandinavian medicine in recent years because of their properties as an immunity booster and as a tool against radiation therapy and cancer. The studies are described at NCBI.