In vertebrates, Nodal signaling plays a major role in endomesoderm induction, but germ
layer delimitation is poorly understood. In avian embryos, the neural/mesoderm boundary is …

Black esophagus, or acute necrotizing esophagitis, is a blackening of the esophagus that is
usually distal with a sharp demarcation at the gastroesophageal border. Black esophagus is …

The family Baculoviridae is a large group of insect viruses containing circular double-stranded
DNA genomes of 80 to 180 kbp, which have broad biotechnological applications. A key …

… , SAB Miele holds a fellowship of CONICET, and MJ Garavaglia holds a fellowship of CIC-PBA
(Comisión de Investigaciones … Javier Garavaglia both contributed equally to this work. …

Electrocution on power lines negatively affects a wide range of groups of birds. Nevertheless,
the overall demographic consequences of electrocution are still poorly understood. …

Grape seed oil is rich in phenolic compounds, fatty acids, and vitamins, with economic
importance to pharmaceutical, cosmetic, and food industry. Its use as an edible oil has also been …

Although several circadian rhythms have been described in C. elegans, its molecular clock
remains elusive. In this work we employed a novel bioinformatic approach, applying …

Regulation is a key concept for understanding the dynamics of metabolism in bacteria. This
report outlines a simple laboratory experiment aimed at studying a key form of regulation in …

* We wish to thank Rosalva Loreto and Francisco Cervantes for their disinterested col-laboration,
and many colleagues for their criticisms of different versions of this work. A grant from …

In the field of prokaryotic taxonomy, there has been a recent transition towards phylogenomics
as the gold standard approach. However, genome-based phylogenetics is still restrictive …