Researchers who work with materials such as fetal tissue and human embryonic stem cells are facing new restrictions, the latest in a long line of regulations, that could impede important advances.

Most of the human induced pluripotent stem cells stored at major cell line repositories and used in research harbor thousands of DNA errors, a study finds, highlighting the need for improved quality control measures.

Using stem cells and a bioreactor, researchers generated living embryos that survived for more than a week and began to develop internal organs.

Research identifies 10 types of dopamine-making neurons, one of which seems to die off during the disease.

Researchers report they were able to make functional sperm in a dish, a feat previously only possible for mice.

Umbilical cord blood may be a good alternative to bone marrow transplants for treating HIV in patients with HIV and cancer.

The University of Southern California bioengineer studies how lizards regrow their tails, with the goal of one day inducing regeneration in humans.

In a statement issued by UK Research and Innovation, stem cell biologist Fiona Watt said she was devastated to learn of the impact of her actions and behavior on colleagues.

The primitive streak, a structure that emerges during mammalian and avian gastrulation, might be a byproduct rather than a landmark of the embryonic development process.

Biological robots made from frog cells can replicate by smooshing loose cells into new robots—a reproduction method not seen in any other organism.

Removal of the 14-day limit for culturing human embryos is one of the main changes in the revised recommendations from the International Society for Stem Cell Research.

While regeneration has long been the domain of colonial tunicates, a solitary species of sea squirt was able to regenerate into multiple, fully functional individuals within a month of being cut up.

Researchers insert functioning cone photoreceptors into the retinas of mice with advanced eye disease, improving their vision.