Serum and tissue alkaline phosphatases in pigs

The alkaline phosphatases from serum, liver, bone and intestine of pigs were separated by starch and polyacrylamide gel electrophoresis. Treatments with neuraminidase, urea, heat, L-homoarginine and L-phenylalanine were performed. Variants of serum alkaline phosphatases were derived from different tissues and hence must be under the control of at least two different loci. Within the intestinal phosphatases, polymorphic electrophoretic patterns were observed among 195 animals.