Scientists Debut Lab Models of Human Embryos Four teams have coaxed human stem cells to organize themselves into embryo-like forms. The advance could shed light on fertility.

Over the next two days, several research teams posted preprints of work using various kinds of human stem cells, some genetically modified, to create models of post-implantation embryos in the lab.

The FNIH launches new program to advance human-based drug safety testing methods enabling faster, more cost-efficient ...

The new organoids were grown in the lab for up to 40 days, and they mimicked the central nervous system of an 11-week-old human embryo. When you purchase through links on our site, we may earn an ...

"Recent gut-on-a-chip models have demonstrated success in maintaining a viable coculture of the human intestinal cells and the microbiome for a few days and even up to weeks," said Valiei.

At this stage, the model embryos contained roughly 2,500 cells, and had reached a level of maturity the equivalent to a 14 day old human embryo that had grown in the womb.

REHOVOT, Israel, Sept 7 (Reuters) - Scientists in Israel have created a model of a human embryo from stem cells in the laboratory, without using sperm, eggs or a womb, offering a unique glimpse ...

The guinea pig serves as an alternative model to study human preimplantation development. Nature Cell Biology , 2025; 27 (4): 696 DOI: 10.1038/s41556-025-01642-9 Cite This Page : ...

"All organs in the human body are complex, but the anatomical inaccessibility and unique biological intricacies of human bone marrow has made it a daunting task to model and study its physiology ...

Scientists have created the first 3D model of the human conjunctiva — the clear, protective outer membrane of the eye — in the lab, and it even produces its own tears.

Maryland lab at forefront of using alternative to animal testing for research. Institute for In Vitro Sciences conducts tests using human-relevant models for products, ingredients ...