Dans cet ouvrage, Alfonso L. Herrera d crit les notions g n rales de biologie et de plasmog nie compar es. Il se penche notamment sur les diff rences entre les cellules animales et v g tales ainsi que sur la r g n ration des tissus. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America,...