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This interactive module introduces the anatomy of the immune system and walks through the timeline of a typical immune response.

This short video explores how a baby’s microbiome is established during birth.

This activity guides the analysis of a published scientific figure from a study on how social status affects the expression of genes involved in immune system processes.

This activity analyzes a published scientific figure from a study assessing if the microbiota from a mother affects the immune systems of the developing offspring.

This demonstration models the first step of the HIV life cycle: the binding of HIV envelope proteins to receptors on human helper T cells.

This interactive module explores key human impacts on the environment and how they have affected Earth’s landscape, ocean, atmosphere, and biodiversity.

This video shows real footage of a cytotoxic T cell killing a cell infected by a pathogen.

This animation shows how a cell infected by a virus signals cytotoxic T cells to destroy itself.

This animation shows how the protein MECP2 helps switch off gene expression.

This animation shows how X chromosomes are randomly switched off in most female mammals.

This interactive, modular lab explores how the ELISA method can be used to test blood samples for evidence of certain diseases.