Synthesis of [14C]- and [3H]-labelled (+)-[1R-[1α,2α(Z),3β,4α]]-7-[3-[(Phenylsulfonyl)AMINO]BICYCLO[2.2.1]HEPT-2-YL]-5-HEPTENOIC ACID, ((+)-S-145) AND ITS CALCIUM SALT (S-1452)