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Natural killer (NK) cells are innate lymphoid cells that have a significant role in regulating the defenses against cancer development and certain viral infections. They are equipped with an array of activating and inhibitory receptors that stimulate or diminish NK cell activity, respectively. Inhibitory receptors include, among others, the MHC class I ligands killer cell immunoglobulin-like receptors (KIR) in humans, and members of the Ly49 family of receptors in mice, and CD94/NKG2A. Activating receptors include cytokine and chemokine receptors, and those that interact with ligands expressed on target cells, such as the natural cytotoxicity receptors or NCRs (NKp30, NKp44 and NKp46), NKG2D...
De fácil lectura y alto contenido científico, el Tratado de Psicofarmacología. Bases y aplicación clínica es una obra dirigida no sólo a psiquiatras y profesionales de las neurociencias, sino al resto de especialidades médicas, principalmente a médicos de atención primaria, residentes, psicólogos clínicos y profesores. Igualmente, los estudiantes de últimos cursos de medicina y enfermería especializada encontrarán en esta obra cualquier aspecto relacionado con la práctica totalidad de las prescripciones en psiquiatría.
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Este libro supone la edición de los fragmentos de la Biblia Coptica, en dialecto Sahídico, conservados en la Colección Roca-Puig. El objetivo de este trabajo es ofrecer un catálogo, con una completa descripción de estos materiales y la edición de sus textos, a modo de contribución al conocimiento de la versión Sahídica de la Biblia.
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The question of why empires decline and fall has attracted the attention of historians for centuries, but remains fundamentally unsolved. This unique collection is concerned with the purely economic aspects of decline. It can be observed of empires in the process of decline that their economies are generally faltering. Here the similarities in different cases of economic decline are identified, bearing in mind that individual histories are characterized by important elements of originality. In his introduction, Professor Cipolla points out that improvements in standards of living brought about by a rising economy lead to more and more people demanding to share the benefits. Incomes increase ...