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    Arizona Science Center
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    In this activity, learners explore how molecules self-assemble and how molecules must fit together, like a lock and key, in order to identify each other and initiate a new function as a combined...

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    Arizona Science Center
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    In this activity, learners explore how molecules must fit together, like a lock and key, in order to identify each other and initiate a new function as a combined unit. By fitting their hands into...

    $1 - $5 per group Ages 8 - 11 45 to 60 minutes
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    APSnet
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    In this biology activity, learners use plastic pipettes to cut wells into the solid gel layer of agar in petri dishes and place solutions of simulated antigen and antibody preparations into the...

    Over $20 per group Ages 14 - 18 45 to 60 minutes
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    National Health Museum
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    This lesson is designed to serve as an introduction to the immune system. It can stand alone or it can lead into further studies of the immune system. The primary focus of this inquiry-based lesson...

    Over $20 per group Ages 14 - adult 2 to 4 hours