Applying the techniques of nonabelian duality to a system of Majorana fermions in 1+1 dimensions, invariant under a nonabelian group O L (N) × O R (N), we obtain the level-one Wess-Zumino-Witten model as the dual theory. This makes nonabelian bosonization a particular case of a nonabelian duality transformation, generalizing our previous result for the abelian case.

Many elements are implicated in fetal and postnatal growth ; the hormonal factors are discussed in this review. In the first section, general hormonal effects on the growth of domestic animals are reviewed with special emphasis on the role of the pituitary and its hormones (growth hormone, prolactin, ACTH) ; somatomedin action is considered in this perspective. The effects of the thyroid and it...