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  • Cloning an Army of T Cells for Immune Defense

    Cloning an Army of T Cells for Immune Defense

    Animations

    (4 min 21 sec) 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.

  • Lactose Digestion in Infants

    Lactose Digestion in Infants

    Animations

    (53 sec) The lactase enzyme is produced in the small intestine of infants. It digests lactose by breaking it into glucose and galactose.

  • Skeletons Reveal Human and Chimpanzee Evolution

    Skeletons Reveal Human and Chimpanzee Evolution

    Click & Learn

    Comparing features of a 4.4-million-year-old fossil skeleton to those of human and chimpanzee skeletons sheds light on our evolutionary history.

  • From Birds to People: The West Nile Virus Story

    From Birds to People: The West Nile Virus Story

    Click & Learn

    West Nile virus infects mosquitoes, birds, and people—with very different consequences.

  • Diet and the Evolution of Salivary Amylase

    Diet and the Evolution of Salivary Amylase

    Lessons

    Students explore the effects of different diets on the evolution of an enzyme that breaks down starch. Also available in Spanish.

  • The Making of the Fittest: Natural Selection in Humans

    The Making of the Fittest: Natural Selection in Humans

    Short Films

    (14 min 3 sec) In some parts of the world, there is an intimate connection between the infectious parasitic disease malaria and the genetic disease sickle cell anemia. Also available in Spanish

  • The Making of the Fittest: The Birth and Death of Genes

    The Making of the Fittest: The Birth and Death of Genes

    Short Films

    (13 min 10 sec) Scientists have pieced together the evolutionary history of the Antarctic icefish. The icefish makes an excellent case study for genetic evolution as both the gain and loss of genes have led to key adaptations.

  • How Novel Icefish Genes Can Improve Human Health

    How Novel Icefish Genes Can Improve Human Health

    Lessons

    A lesson that requires students to read detailed scientific passages and explain how an understanding of specific icefish adaptations might lead to a treatment or cure for human disorders, such as osteoporosis and anemia. 

  • Icefish Blood Adaptations: Viscosity

    Icefish Blood Adaptations: Viscosity

    Lessons

    In this simple lab activity, students simulate and compare how blood pumps through the circulatory system of icefish and other fish.

  • Icefish Blood Adaptations: Antifreeze Proteins

    Icefish Blood Adaptations: Antifreeze Proteins

    Labs & Demos

    In this activity, students investigate the importance of antifreeze proteins for icefish survival through two simple labs.

  • Film Guides: The Birth and Death of Genes

    Film Guides: The Birth and Death of Genes

    Film Activities

    The following classroom-ready resources complement The Making of the Fittest: The Birth and Death of Genes, which describes how scientists have pieced together the evolutionary history of the Antarctic icefish. The icefish makes an excellent case study for genetic evolution as both the gain and loss of genes have led to key adaptations.

  • Molecular Genetics of Color Mutations in Rock Pocket Mice

    Molecular Genetics of Color Mutations in Rock Pocket Mice

    Lessons

    A lesson that requires students to transcribe and translate portions of the wild-type and mutant rock pocket mouse Mc1r genes and compare sequences to identify the locations and types of mutations responsible for the coat color variation described in the film. Also available in Spanish.

  • Battling Vector-Borne Diseases: Factors That Affect the Mosquito Life Cycle

    Battling Vector-Borne Diseases: Factors That Affect the Mosquito Life Cycle

    Labs & Demos

    In this activity, students rear mosquitoes in chambers and test variables that might affect the life cycle of the mosquito. Resources are also available in Spanish.

  • The Mosquito Life Cycle Activity

    The Mosquito Life Cycle Activity

    Lessons

    Students breed and observe mosquitoes in order to study their life cycle and demonstrate the utility of this data for public policy. Resources are also available in Spanish.

  • Stopping Mosquito-Borne Disease

    Stopping Mosquito-Borne Disease

    Click & Learn

    Learn about the nature of vector-borne diseases, and the life cycle of the dengue vector mosquito.

  • The Mosquito Life Cycle

    The Mosquito Life Cycle

    Clips

    (1 min 7 sec) To prevent mosquitoes from spreading diseases, it's essential to understand their life cycle.

  • Bee Colony Collapse Disorder

    Bee Colony Collapse Disorder

    Clips

    (7 min 46 sec) Charles Runckel, a graduate student in the DeRisi lab, uses the Virochip to examine the mystery of bee colony collapse disorder.

  • Dengue Virus Enters a Cell

    Dengue Virus Enters a Cell

    Animations

    (1 min 33 sec) Infection begins when the dengue virus uses receptors on an immune cell's surface to gain entry and release its genome.

  • Structure of Dengue Virus

    Structure of Dengue Virus

    Animations

    (1 min 3 sec) The dengue virus's outer envelope proteins form symmetrical units and overlay the lipid envelope, capsid, and the RNA genome.

  • Dengue Virus Life Cycle

    Dengue Virus Life Cycle

    Animations

    (4 min 12 sec) Dengue virus has sophisticated mechanisms for entering a cell, for replicating its RNA genome, and for translating proteins.

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