Marcela Benavides Guzmán

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During gastrulation, a cascade of inductive tissue interactions converts pre-existing polarity in the mammalian embryo into antero-posterior pattern. This process is triggered by Nodal, a protein related to transforming growth factor-beta (TFG-beta) that is expressed in the epiblast and visceral endoderm, and its co-receptor Cripto, which is induced(More)
E. Eliasco1, I. C. Livieratos1,2, G. Müller3, M. Guzman4, L. F. Salazar3, and R. H. A. Coutts1 1Department of Biological Sciences, Imperial College London, Sir Alexander Fleming Building, London, U.K. 2Mediterranean Agronomic Institute of Chania (MAICH), Alsyllion Agrokepion, Chania, Crete, Greece 3The International Potato Center, Lima, Peru 4Faculty of(More)
To evaluate the variation of Potato yellow vein virus from potato fields, 12 isolates were collected from Colombia and one was collected from Peru. Double-stranded RNA was extracted from the plants and used as a template for RT-PCR amplification of the coat protein (CP) gene and, in separate reactions the C-terminal region of the heat shock protein 70(More)
Songbirds must annually undergo two energetically demanding but important activities: breeding and feather molt. Due to the high energetic investment that each demands, these two events are generally not carried out simultaneously. However, substantial variation in the level of annual reproductive investment among populations may result in variation in(More)
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