Catálogo de publicaciones - revistas

<jats:p>New guidelines have positive aspects, but challenges remain in relation to previously approved stem cell lines, informed consent, oversight, and research embryos.</jats:p>

<jats:p>Reforms that are raising the quality of IT in Croatian science and education aim to create a knowledge-based society.</jats:p>

<jats:p>Diatom genomes contain remnants of both green and red algal genomes, hinting at a complex evolutionary past.</jats:p>

<jats:p>The female gametophyte of flowering plants may have evolved through iteration of a modular structure and a gradient of the hormone auxin.</jats:p>

<jats:p>The polarized distribution of P granules in a worm embryo is achieved, not by movement of the granules, but by a condensation process.</jats:p>

<jats:p>A concept for evaluating the relative importance of steps in complex reactions may guide the development of better catalysts.</jats:p>

<jats:p>As the Internet is increasingly used not only for communication but also for computing, issues of protocol, security, and openness need to be addressed.</jats:p>

<jats:p> A monthly roundup of recent news and projects of <jats:italic>Science</jats:italic> 's publisher, the American Association for the Advancement of Science. </jats:p>

<jats:p>Cell self-renewal and the capacity to differentiate into multiple cell types (pluripotency) are biological attributes casting stem cells as attractive candidates for development of therapies targeting indications that involve functional restoration of damaged tissues. In the United States, clinical trials designed to demonstrate the safety and effectiveness of stem cell–based products are regulated by the U.S. Food and Drug Administration (FDA). To ensure that subjects enrolled in a clinical study involving stem cell–based products are not exposed to significant and unreasonable risk, the FDA reviews medical and scientific information that encompasses delineation of product-specific characteristics and preclinical testing to determine whether there is sufficient safety assurance to permit initiation of human clinical studies.</jats:p>