Glutamic-oxalacetic transaminase: Cammarata “Fractionation and properties of glutamic-oxalacetic transaminase” (1951) teaches that low temperature alcohol fractionation, so successful in plasma protein fractionation, offers advantages over ammonium sulfate in the purification of gluatmic-oxalacetic transaminase. Care was taken to add the 95% alcohol dropwise or in a fine spray to avoid excess local concentration.