All cells originate as stem cells and wait for a signal that tells them what to become. Maybe it will become a nerve, skin, muscle, heart, spinal cord, or red blood cell. Find out more about stem cells here.

Adult Stem Cells Repair Damaged Tissue
Adult Stem Cells Repair Damaged Tissue, Regina's Biology Blog, ThoughtCo. "Researchers have discovered two important pathways that control stem cell function. One pathway signals cell repair, whi
https://www.thoughtco.com/understanding-stem-cells...
Create a Stem Cell Line Game
Create a Stem Cell Line Game, Edheads.org, "Learn what a stem cell is and help our scientists create a stem cell line!"
http://edheads.org/...
Embryonc Stem Cells
Embryonic Stem Cells, Kahn Academy, Video length: 19:54
http://www.khanacademy.org/video/embryonic-stem-ce...
Embryonic Stem Cells - Video
Embryonic Stem Cells, Khan Academy, YouTube.com, Video length: 19:54. An overview of early development of a zygote to an embryo. Embryonic and somatic stem cells.
https://www.youtube.com/watch...
Go, Go Stem Cells
Go, Go Stem Cells, Genetic Science Learning Center, University of Utah, Interactive and great site! "Send activating signals to stem cells and watch them get to work!"
http://learn.genetics.utah.edu/content/stemcells/s...
How Embryonic Stem Cell Lines are Made
How Embryonic Stem Cell Lines are Made, DNA Learning Center, "This animation presents the basics on how stem cell lines are established."
http://www.dnalc.org/resources/animations/stemcell...
How Stem Cells Work
How Stem Cells Work, by Stephanie Watson, How Stuff Works, "Stem cells can develop into every cell, tissue and organ in the body. Learn about stem cell research challenges and controversy and how
http://science.howstuffworks.com/environmental/lif...
Human Embryonic Stem Cells
Human Embryonic Stem Cells, Sumanas, Inc., Great animation!!
http://www.sumanasinc.com/scienceinfocus/stemcells...
Older stem cells don't just wear out, they actively shut themselves down
Older stem cells dont just wear out, they actively shut themselves down, University of Michigan News, September 06, 2006 , "A trio of papers published on-line Sept. 6 in the journal Nature shows
http://www.lsi.umich.edu/newsevents/discoveries/20...
Reversing Cell Differentiation
Reversing Cell Differentiationn Genetic Science Learning Center, University of Utahn "Stem cells can now be created from differentiated cells."
http://learn.genetics.utah.edu/content/stemcells/i...
Stem Cell Basics
Stem Cell Basics, National Institute of Health, A basic primer on stem cells.
https://stemcells.nih.gov/info/basics.htm
Stem Cell Quick Reference
Stem Cell Quick Reference, Genetic Science Learning Center, University of Utah, "Are you confused about all the different types of stem cells?" This site will help you understand their potential.
http://learn.genetics.utah.edu/content/stemcells/q...
Stem Cells - the Basics
Stem Cells - the Basics, Posted by corzak33, January 20, 2008, YouTube.com, Video length: 01:18.
http://www.youtube.com/watch...
Stem cells - Video
Stem cells, March 27, 2015, By Khan Academy, Video Length: 11:53.
https://www.youtube.com/watch...
Stem Cells Breakthrough
Stem Cells Breakthrough NOVA PBS.org Three separate teams overcome a biomedical hurdle: creating stem cells without the use of human embryos. Video length: 13:39
http://www.pbs.org/wgbh/nova/body/stem-cells-break...
Stem Cells Shape Up
Stem Cells Shape Up, October 31, 2014, By Elia Ben-Ari for the National Institutes of Health, Live Science, Article on embryonic cells.
http://www.livescience.com/48550-stem-cells-geomet...
Stem Cells: Cells with Potential
Stem Cells: Cells with Potential, Exploratorium Museum, Explains what stem cells are and has a video explaining why the science of stem cells is important.
http://www.exploratorium.edu/imaging_station/resea...
Stem cells: What they are and what they do
Stem cells: What they are and what they do, Mayo Clinic Staff, Covers a variety of topics related to stem cells.
http://www.mayoclinic.com/health/stem-cells/CA0008...
The Nature of Stem Cells
The Nature of Stem Cells, Genetic Science Learning Center, University of Utah, "Stem cells play many important roles in our bodies from embryonic development through adulthood."
http://learn.genetics.utah.edu/content/stemcells/s...
The Nature of Stem Cells
The Nature of Stem Cells, Genetic Science Learning Center, University of Utah, Interactive! "An introduction to stem cells, the building blocks of the body."
http://learn.genetics.utah.edu/content/stemcells/s...
Unlocking Stem Cell Potential
Unlocking Stem Cell Potential, Genetic Science Learning Center, University of Utah, Flash presentation of 15 narrated slides.
http://learn.genetics.utah.edu/content/stemcells/s...
Using Own Skin Cells to Repair Hearts on Horizon
Using Own Skin Cells to Repair Hearts on Horizon, By Lisa Merkl, University of Houston, March 2, 2010, "A heart patient's own skin cells soon could be used to repair damaged cardiac tissue thank
http://www.uh.edu/news-events/stories/2010articles...
What are Stem Cells?
What are Stem Cells? News-Medical.net Brief article and illustration.
http://www.news-medical.net/health/What-are-Stem-C...
What is Bone Marrow?
What is Bone Marrow? News-Medical.net Bone marrow is the flexible tissue found in the hollow interior of bones. Visit the website for the article.
http://www.news-medical.net/health/What-is-Bone-Ma...