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embryology

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Video showing a ring of cells forming regularly spaced pits along its circumference.
developmental biology

Embryo Cells Set Patterns for Growth by Pushing and Pulling

By Monique Brouillette
July 12, 2022
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Patterns that guide the development of feathers and other features can be set by mechanical forces in the embryo, not just by gradients of chemicals.

developmental biology

Cells Form Into ‘Xenobots’ on Their Own

By Philip Ball
March 31, 2021
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Embryonic cells can self-assemble into new living forms that don’t resemble the bodies they usually generate, challenging old ideas of what defines an organism.

Portrait photo of Catherine Dulac of Harvard University and the Howard Hughes Medical Institute.
Q&A

Catherine Dulac Finds Brain Circuitry Behind Sex-Specific Behaviors

By Claudia Dreifus
December 14, 2020
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Catherine Dulac is overturning preconceptions about “male” and “female” instincts and opening new avenues to treating postpartum depression.

A baby lizard emerging from a transparent egg membrane.
Abstractions blog

Egg Laying or Live Birth: How Evolution Chooses

By Dana Najjar
May 18, 2020
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A lizard that both lays eggs and gives birth to live young is helping scientists understand how and why these forms of reproduction evolved.

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