The Immune System This interactive module introduces the anatomy of the immune system and walks through the timeline of a typical immune response. Cell Biology Anatomy & Physiology Click & Learn High School — General High School — AP/IB College
Symbiotic Bioluminescence This tutorial describes the symbiosis between the Hawaiian bobtail squid and bioluminescent bacteria. Cell Biology Microbiology Anatomy & Physiology Click & Learn High School — AP/IB College
Calcium Channel Blockers and Paralysis This animation shows how the drug Prialt suppresses signals from the nervous system, which can paralyze certain organisms. Cell Biology Anatomy & Physiology Animations High School — AP/IB College
Cone Snail Toxins and Paralysis This animation shows how cone snail toxins cause paralysis by blocking signal transmission at the synapse between neuron and muscle. Cell Biology Anatomy & Physiology Animations High School — AP/IB College
Electrical Activity of Neurons This tutorial describes how neurons generate action potentials, and how scientists measure neuronal activity and record the firing of individual neurons. Cell Biology Anatomy & Physiology Click & Learn High School — AP/IB College
Electrical Measurement of Muscle Activity This video provides a demonstration of how nerve-muscle connectivity is measured. Cell Biology Anatomy & Physiology Clips High School — General High School — AP/IB College
Cellular Differentiation Along Concentration Gradients This animation shows how varying concentrations of a signaling molecule activate different transcription factors to determine cell fate. Genetics Cell Biology Anatomy & Physiology Animations High School — AP/IB College
Molecular Mechanism of Synaptic Function This animation shows how neurons send and receive signals to communicate with one another at contact points called synapses. Cell Biology Anatomy & Physiology Animations High School — AP/IB College
Cytotoxic T Cell in Action This video shows real footage of a cytotoxic T cell killing a cell infected by a pathogen. Cell Biology Anatomy & Physiology Clips High School — General High School — AP/IB College
Targeting Infected Cells for Immune Defense This animation shows how a cell infected by a virus signals cytotoxic T cells to destroy itself. Cell Biology Microbiology Anatomy & Physiology Animations High School — AP/IB College
Zebrafish Heart Regeneration This animation shows how zebrafish can rapidly heal wounds to the heart. Cell Biology Anatomy & Physiology Animations High School — General High School — AP/IB College
PPAR-gamma Activation in the Fat Cell This animation shows how the PPAR-gamma receptor can activate fat storage and changes in hormone levels. Genetics Cell Biology Anatomy & Physiology Animations High School — AP/IB College