When you were first conceived, you were a single cell. From this basic fact, we can extrapolate a few things, most especially that all the cells that make up your body today came (indirectly) from ...

Seals give birth only when conditions are right. After mating, a female seal can delay implantation of the embryo in the ...

FEDERAL POLICY on stem-cell research is moving out of the realm of politics and back into the laboratory where it belongs. The Obama administration last week approved 33 lines of human embryonic stem ...

Researchers have succeeded in generating high-quality feline embryonic stem cells using sperm and eggs from testes and ovaries discarded during sterilization surgery. As different as they may seem, ...

Orthopedic non-invasive stem cell therapy regenerates damaged tissue rather than just improving symptoms. Autologous stem cell therapy uses cells from your own body, minimizing rejection risks.

Immune cells called B cells make antibodies that fight off invading bacteria, viruses and other foreign substances. During ...