Cardosin A, an abundant aspartic proteinase, accumulates in protein storage vacuoles in the stigmatic papillae of Cynara cardunculus L. Authors: Ramalho-Santos M, Pissarra J, Veríssimo P, Pereira S, Salema R, Pires E, Faro CJ.Reference: Planta. 1997 Oct;203(2):204-12.PMID: 9362566 Read More Santos LabOctober 1, 19971997