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  • Why Two Heads?

    Why Two Heads?

    Phenomenal Images

    Students explore images of planarians regenerating body parts as phenomena to explore cell division and differentiation.

  • Investigating Planarian Behavior and Regeneration

    Investigating Planarian Behavior and Regeneration

    Labs & Demos

    This activity allows students to observe their own planarian and then design an experiment to investigate how planarians regenerate.

  • Creating Embryonic Stem Cell Lines

    Creating Embryonic Stem Cell Lines

    Animations

    (1 min 38 sec) The inner cell mass (ICM) cells of blastocyst-stage early human embryos can be removed and cultured. These cells can be grown in the lab indefinitely. Various growth factors cause these cells to develop into a variety of differentiated cells, such as muscle or nerve cells.