ABSTRACT
PIP: Immigration to Argentina from 1970 to 1985 is examined. The author first discusses difficulties concerning the available data. Next, data from different sources are compared. The author then examines the continuity in the flow of migrants over time, with particular reference to the period 1981-1985^ieng
Subject(s)
Data Collection , Emigration and Immigration , Time Factors , Americas , Argentina , Demography , Developed Countries , Developing Countries , Latin America , Population , Population Dynamics , Research , South AmericaABSTRACT
A lethal diffusible metabolite excreted by the yeastlike form of Paracoccidioides brasiliensis was isolated, purified, and partially characterized. The chemical structure of this metabolite suggested a relation to the phenol or benzoic acid families. The lethal effect on P. brasiliensis could not be attributed specifically to interference with synthesis of macromolecules, but probably through protein denaturation. This lack of specificity discounts its possible use as an antibiotic.