Las bolsas de cereales y su influencia en las exportaciones de América Latina y el Caribe = The grain exchanges and their influence on Latin American and Caribbean exports

Incluye Bibliografía

The metal exchanges and their incidence in the development of mining in Latin America and the Caribbean

Includes bibliography

Gas exchanges in annonaceae species under different crop protections

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Sister chromatid exchanges and chromosome aberrations in lymphocytes of nurses handling antineoplastic drugs

Chromosomal aberrations (CA) and sister-chromatid exchanges (SCE) were investigated in peripheral lymphocytes of 15 nurses and nurse's aides handling cytostatic agents in hospital oncology units. Significantly increased frequencies were noted for both CA and SCE rates when the exposed individuals were compared with 15 nurses working in other hospital units and to a control sample matched by sex and age. This points to the need for emphasizing protective measures in the handling of anti-neoplastic agents.