William Lensch work in Dr. George Daley's laboratory in the Division ... cell mass (A), membrane-like cells (B), and placental cells (C). Only the embryonic stem cells are able to continue growing ...

As she looked more closely across all stages of embryo ... cells still carry the germline genomes from the gametes that produced the first cell. As early as the two or four-cell stage, the DNA begins ...

Researchers stained the cells of a mouse embryo that had its tissue cleared so they could watch its nervous system and blood vessels develop in tandem. This 13.5-day-old embryo, viewed under a ...

Count the eyes of a spider, investigate the inner workings of an alligator embryo and see more of the world under a microscope ... image of three single-cell freshwater protozoans, sometimes ...

Scientists were able to identify chromosomes under the microscope as early as the 19th ... precise distribution of nuclear material during cell division. His work provided an invaluable ...

The ability of human embryonic stem cells (hESCs) to differentiate into specialized cells of all three germ layers (pluripotency), their capability for unlimited cell division (self-renewal ...

Under a microscope, scientists then aimed tiny beams of light onto specific regions of these cells. As they did this, the light-sensitive GEF activated Rho proteins exactly where the light shone.