Corresponding Author:
Claudio Prieto. UNL, FBCB (School
of Biochemistry and Biological Sciences), CBL (Biotechnological Center
of Litoral). Ciudad Universitaria, Ruta Nacional 168 Km 472.4, C.C. 242.
(S3000ZAA), Santa Fe, Argentina.
Tel./Fax: +54 342 4552928. E-mail: cprieto@fbcb.unl.edu.ar