Osteoblast tissue-nonspecific alkaline phosphatase antagonizes and regulates PC-1. - Johnson KA; Hessle L; Vaingankar S; Wennberg C; Mauro S; Narisawa S; Goding JW; Sano K; Millan JL; Terkeltaub R (American journal of physiology. Regulatory, integrative and comparative physiology, 2000)