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  • Howard Hughes Medical Institute
Antigen presentation and CTL
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How a cell infected by a virus signals cytotoxic T lymphocytes to kill the cell before the virus replicates and spreads. This video is two minutes and 34 seconds in length, and available in Quick Time (11 MB) and Windows Media Player (23 MB). All Infection Disease Animations are located at: http://www.hhmi.org/biointeractive/disease/animations.html.

Subject:
Health, Medicine and Nursing
Biology
Material Type:
Lecture
Provider:
Howard Hughes Medical Institute
Date Added:
06/12/2012
Cloning an Army of T Cells for Immune Defense
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View the animation to see how one type of immune cell-the helper T cell-interprets a message presented at the surface of the cell membrane. The message is an antigen, a protein fragment taken from an invading microbe. A series of events unfolds that results in the production of many clones of the helper T cell. These identical T cells can serve as a brigade forming an essential communication network to activate B cells, which make antibodies that will specifically attack the activating antigen.

Subject:
Health, Medicine and Nursing
Chemistry
Material Type:
Lecture
Provider:
Howard Hughes Medical Institute
Date Added:
04/10/2012
Immunology Lecture Series
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This 4-lecture series covers the basics of the immune system, how T cells work, how MHC proteins affect our susceptibility to autoimmune diseases, and the relationship between the immune system and infectious diseases.

Subject:
Health, Medicine and Nursing
Material Type:
Lecture
Provider:
Howard Hughes Medical Institute
Author:
John W. Kappler, Ph.D.
Philippa Marrack, Ph.D.
Date Added:
04/24/2012
Planarian Regeneration and Stem Cells
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A mini-documentary discussing the remarkable regenerative capabilities of the planarian, and how HHMI researcher Alejandro Snchez Alvarado uses them to study the biology of stem cells. This presentation is also featured on the DVD Potent Biology: Stem Cells, Cloning, and Regeneration, available for free from HHMI. This video is 11 minutes and 46 seconds in length, and available for download in Quicktime (114 MB) and Windows Media (156 MB) formats. All Stem Cell videos are located at: http://www.hhmi.org/biointeractive/stemcells/video.html.

Subject:
Health, Medicine and Nursing
Material Type:
Lecture
Provider:
Howard Hughes Medical Institute
Author:
Alejandro Sanchez Alvarado
Date Added:
04/01/2011
The Virtual Immunology Lab
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Components of the immune system called antibodies are found in the liquid portion of blood and help protect the body from harm. Antibodies can also be used outside the body in a laboratory-based assay to help diagnose disease caused by malfunctions of the immune system or by infections.This virtual laboratory will demonstrate how such a test, termed an enzyme-linked immunosorbent assay (ELISA), is carried out and show some of the key experimental problems that may be encountered.

Subject:
Health, Medicine and Nursing
Material Type:
Activity/Lab
Interactive
Reading
Simulation
Provider:
Howard Hughes Medical Institute
Author:
Joseph Perpich
Date Added:
04/17/2012