Antigen presentation and cytotoxic T lymphocytes
This narrated animation from the HHMI shows how a cell infected by a virus signals cytotoxic T lymphocytes to kill the cell before the virus replicates and spreads. http://www.hhmi.org/biointeractive/antigen-presentation-and-ctl To view more resources from HHMI’s BioInteractive website, please visit: http://www.hhmi.org/biointeractive
From bacteria to infinity… and beyond
From quarks to the known universe, this interactive graphic (developed by Cary and Michael Huang) shows you the scale of lots of things that are in between. http://scaleofuniverse.com
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