A new technique of microlympho-venous anastomoses. Experimental study.

This experimental study in dogs presents a new technique of microlympho-venous anastomosis to improve long-term patency rates and clinical results in lymphedema therapy. Technical points, such as an oval window on the wall of the vein and a few sutures piercing only two lymphatic layers, adventitia and media, outside the lumen for successful results are emphasized. Three methods for assessment of patency of anastomoses were used: (1) observation with operating microscope of dye transit across the anastomotic site; (2) lymphography, and (3) histopathologic examination.

Rheumatic symptoms and signs in subacute infective endocarditis.

Two hundred patients (90 men and 110 women), mean age 36.2 years, admitted to a Department of Medicine, between 1961 and 1979 with subacute infective endocarditis (SIE) were studied. Rheumatic heart valve disease was the predisposing lesion in 94% and the mitral valve was involved in about 80% of the cases.

Heterosis in a wild strain of Drosophila polymorpha with a lethal closely linked to the major esterase locus.

A laboratory population derived from a single wild inseminated female has a lethal so closely linked to the major esterase locus that in 3 years of observations no crossover products have been detected. Linkage with a chromosome inversion was excluded by cytological analysis. The heterozygotes are superior to the homozygotes in egg-adult viability, egg-laying rate, and longevity.

Codominant isoenzymic alleles as markers of genetic diversity correlated with heterosis in maize (Zea mays).

The average F1 yields were found to be significantly correlated with the genetic diversity of the parental strains calculated from the zymogram patterns of five enzyme systems in a sample of eight strains and their diallelic crosses.Despite the relatively small number of loci (eight) studied, there is evidence that these codominant alleles are good markers for genetic heterogeneity that is a source of heterosis.