Multiple purple and pink renditions of stem cells appear as spherical clusters enveloped in translucent bubbles
Mammalian Embryos Might Not Need Primitive Streaks After All
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.
ABOVE: © ISTOCK.COM, ANUSORN NAKDEE
Mammalian Embryos Might Not Need Primitive Streaks After All
Mammalian Embryos Might Not Need Primitive Streaks After All

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.

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.

ABOVE: © ISTOCK.COM, ANUSORN NAKDEE

embryoid

embryoid human embryonic stem cell
Researchers Generate Model of Human Embryo from Human Stem Cells
Ashley P. Taylor | Jul 2, 2019
The research may necessitate the formation of new ethical guidelines.
Image of the Day: Embryoid
The Scientist Staff | Aug 11, 2017
Using human pluripotent stem cells, scientists engineered an amniotic sac-like structure, potentially useful for uncovering the elusive cellular signals that lead to infertility.
Researchers Argue for “Embryoid” Ethics Revamp
Bob Grant | Mar 22, 2017
Scientists issue a call to reconsider the rules governing the creation of tissues, organs, and other structures made possible by recent advances in synthetic biology.