During animal development, cells divide and arrange themselves in a coordinated way, eventually forming the embryo. The cells ...

Scientists combined 120 of these cells in a precise ratio, mixed them in a shaker, and then watched to see what developed — and soon, an embryo-like structure formed spontaneously.

New work by scientists in the U.S. and China shows how a fertilized egg cell, or zygote, hits ‘reset’ so that the newly formed embryo can develop according to its own genetic program. The study was ...

Stem cell biologist Jacob Hanna, a 2024 STATUS List member, says embryo models can be handled ethically, and can lead to advances in organ transplantation.

“We want to know how cells organize themselves into an embryo-like model, and what could go wrong when there are pathological conditions that prevent an embryo from successfully developing.” Cell ...

Our stem-cell-derived human embryo model offers an ethical and accessible way of peering into this box. It closely mimics the development of a real human embryo, particularly the emergence of its ...

"It is very surprising that most of these embryo arrests are coming not from errors in egg formation but from errors happening in cell divisions after fertilization. The fact that these errors don't ...

Mature egg cells, or oocytes, are essential for fertilization in assisted reproductive technologies. However, some 'denuded' oocytes, or those lacking the protective granulosa cell layer, fail to ...

Lab-engineered human embryo models created from stem cells provide a look at development beyond the first week. But they raise ethical questions.

A stem-cell derived human embryo model showing blue cells (embryo), yellow cells (yolk sac) and pink cells (placenta). Scientists have grown an entity that closely resembles an early human embryo ...

In some new research featuring wondrous video of the cricket embryo — showing certain “right parts” (the cell nuclei) moving in three dimensions — Dr. Extavour, Dr. Donoughe and their ...