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Planarian Regeneration and Stem Cells

This video discusses the remarkable regenerative capabilities of the planarian, and how biologist Alejandro Sánchez Alvarado uses them to study the biology of stem cells.

Salamander Limb Regeneration

This animation shows how salamanders can replace missing limb tissues with the help of cells similar to stem cells.

X Inactivation

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

Kidney Function

This video explores how the kidneys filter blood to remove wastes and excess fluid from the body, maintaining a healthy balance of water and salts in the blood.