Showing papers by "Universidade Federal de Mato Grosso published in 1980"
TL;DR: The recurrence risks for Down syndrome due to an inherited translocation are estimated from empirical data in the literature for two maternal age groups: mothers under 30 and mothers 30 and over.
Abstract: The recurrence risks for Down syndrome due to an inherited translocation are estimated from empirical data in the literature for two maternal age groups: mothers under 30 and mothers 30 and over. These risks were found to be approximately 0.3% and 0.05%, respectively. The probability for two Down syndrome sibs both having an inherited translocation was estimated as about 18.2% for the former age group and 2.7% for the latter. The relative effectiveness in preventing Down syndrome births by karyotyping affected children is discussed.
13 citations
TL;DR: A diferença química entre as espécies contendo rotenóides, as substâncias mais conspícuas do grupo inclusive por sua atividade bio lógica e da floresta úmida amazônica é deveras sutil, mesmo que significativa.
Abstract: Resumo A raiz de Lonchocarpus longifolius (Benth.) Ducke. sin. Derris longilofia Benth. (Leguminosae-Papilionoideae), dos arredores de Manaus, Amazonas, contem rotenona, 12a-hidroxirotenona e 6a, 12a-deshidrorotenona ao lado de deguelina e 12a-hidroxideguelina (tefrosina).
3 citations