Evidence for an unidentified growth factor(s) from alfalfa and other plant sources.
Lakhanpal,R., Davis, J., Typpo, J., Briggs, G. 1966. J, Nutr. 89(3):341-346
Factor(s) important for growth in guinea pigs were found in alfalfa, broccoli and grass clippings. They may or may not be related to the ‘grass juice factor’, but are organic in nature since they are not found in ash.