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YouTube is a place to discover, watch, upload and share videos.

from News-Medical.Net - Latest Medical News and Research from Around the World

Yahoo! Respuestas es una nueva forma para encontrar y compartir información. Puedes formular preguntas sobre cualquier tema, recibir respuestas de personas reales y compartir tus conocimientos y experiencias.

CDC Centers for Disease Control and Prevention - Your Online Source for Credible Health Information

The National Network for Immunization Information (NNii) provides up-to-date, science-based information to healthcare professionals, the media, and the public: everyone who needs to know the facts about vaccines and immunization.

Scribd is a social publishing site, where tens of millions of people share original writings and documents. Scribd

Prezi is the zooming presentation editor

Twitter is without a doubt the best way to share and discover what is happening right now.

Answers from thousands of trusted physicians. Anytime, anywhere. For FREE! Now also available on your iPhone, iPad, and Android!

ZDNet delivers the latest technology news, comments and product reviews focusing on IT hardware, software, mobile, security, and other special topics

Free Homework Help Videos in Math (Algebra 1-2, Geometry, Trigonometry, Precalculus, Calculus) & Science (Physics, Chemistry, Biology); SAT, ACT, AP & PSAT