Silvia Santamaría

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Carcinoma of the colon and rectum is rare in the pediatric age group, and usually presents with an advanced stage disease bearing a poor prognosis. Colorectal carcinoma should be considered in children with signs of intestinal obstruction, alteration in bowel habits, gastrointestinal bleeding and chronic abdominal pain. We performed a retrospective study to(More)
Tissue-engineering therapies using undifferentiated mesenchymal cells (MSCs) from intra-oral origin have been tested in experimental animals. This experimental study compared the characteristics of undifferentiated mesenchymal stem cells from either periodontal ligament or gingival origin, aiming to establish the basis for the future use of these cells on(More)
Organ size control is a long-standing question in biology. In mammals, using conditional cell ablation, two mutually exclusive mechanisms involving either intrinsic or extrinsic programs have been described to control organ size. The mammary gland is an ideal model for such studies, since it undergoes size and morphological changes during puberty and(More)
High robustness of complex ecological systems in the face of species extinction has been hypothesized based on the redundancy in species. We explored how differences in network topology may affect robustness. Ecological bipartite networks used to be small, asymmetric and sparse matrices. We created synthetic networks to study the influence of the properties(More)
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