Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Font Size

Embryonic Clones Made From Adult Cells

Cloning Technique Uses Skin Cells; Goal Is to Generate Embryonic Stem Cells
WebMD Health News
Reviewed by Louise Chang, MD

Jan. 17, 2008 -- Researchers today reported that they have made embryonic clones from donated eggs and men's skin cells.

The clone developed into hollow balls of cells (blastocysts) in the researchers' lab.

This is the first time the cloning technique has been done using adult cells (the male skin cells) instead of embryonic cells, according to the scientists, who included Andrew French, PhD, of Stemagen, a stem cell research and development company in California.

French and colleagues call their work a "prelude" to the development of cloned human embryos to generate embryonic stem cells for stem cell research.

In other words, they've shown that they can make embryonic clones from adult cells, but they haven't yet gotten those embryonic clones to make embryonic stem cells.

Here's how the process worked.

  • Step 1: Remove the nucleus, which contains DNA, from the donated egg.
  • Step 2: Insert the skin cell's nucleus into that egg.
  • Step 3: Coax the egg to start dividing.

The basic idea is to make the egg start developing with the donor's DNA instead of the egg's own DNA.

French's team reports developing five blastocysts using skin cells donated by two men. Only one of those blastocysts was confirmed by DNA tests to be a true clone, with no genetic material from the donated egg.

Details of the experiment appear in today's online edition of Stem Cell.

(What do you think about human cloning? Share your thoughts on WebMD's Health Cafe message board.)

WebMD Video: Now Playing

Click here to wach video: Dirty Truth About Hand Washing

Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

Click here to watch video: Dirty Truth About Hand Washing