SECOND JOINT MEETING OF THE BIOLOGY SOCIETIES FROM ARGENTINA (Segunda Reunión Conjunta de Sociedades de Biología de la República Argentina) XIII Multidisciplinary Workshop, Argentine Society of Biology (Sociedad Argentina de Biología) XXIX Annual Scientific Meeting, Cuyo Biology Society (Sociedad de Biología de Cuyo) XVIII Scientific Workshop, Córdoba Biology Society (Sociedad de Biología de Córdoba) Abstracts August 17-19, 2011 San Juan, Argentina The abstracts were evaluated by a scientific committee prior to publication BIOCELL 2011, 35(3): A191- A306 ISSN 0327 - 9545 PRINTED IN ARGENTINA