- Avian cathepsin B cDNA: sequence and demonstration that mRNAs of two sizes are produced in cell types producing large quantities of the enzyme. Dong, S.S., Stransky, G.I., Whitaker, C.H., Jordan, S.E., Schlesinger, P.H., Edwards, J.C., Blair, H.C. Biochim. Biophys. Acta (1995)