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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 interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history.

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

This video describes how scientists silence different genes in regenerating planaria to study the process of regeneration at the molecular level.

This interactive module explores how mutations arise in germline and somatic cells. It also shows how these mutations can lead to genetic conditions, such as cystic fibrosis and cancer.

A number of questions are embedded within the short film The Making of the Fittest: The Birth and Death of Genes, which illustrates how gene duplications and mutations have led to remarkable physiological adaptations in Antarctic fish.

This interactive module explores the circulatory systems of major vertebrate groups to gain insights into their evolution.

This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer.

This animation shows how a region of the brain called the cerebral cortex develops in a human fetus.

This animation shows how the cancer treatment Gleevec inhibits the cancer-causing protein BCR-ABL.

This film explores how gene duplications and mutations have led to remarkable physiological adaptations in Antarctic fish.

This tutorial describes the symbiosis between the Hawaiian bobtail squid and bioluminescent bacteria.