Dr. Rosenthal describes how antlers are one of the few examples of complete mammalian regeneration.
Dr. Rosenthal uses a model of a heart and an artery to describe how blockages lead to heart attack and tissue damage.
Cell cultures derived from human embryonic stem cells can reproduce indefinitely and also differentiate into specialized cell types, including beating heart cells.
A mini-documentary discussing the remarkable regenerative capabilities of the planarian, and how HHMI researcher Alejandro Sánchez Alvarado uses them to study the biology of stem cells.
Somatic cell nuclear transfer (SCNT) is performed looking through a microscope and using small glass pipettes to handle human eggs and to remove and transfer nuclei from one cell to another.
Dr. Melton describes the process used to extract DNA from a cell and to analyze it on a gene chip.