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
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