Related topics: embryos · genes · stem cells · cells · protein

New findings on body axis formation

In the animal kingdom, specific growth factors control body axis development. These signaling molecules are produced by a small group of cells at one end of the embryo to be distributed in a graded fashion toward the opposite ...

Ocean warming could hit shark survival

Infant sharks that live in the familiar mermaids' purses found on most beaches in the UK and throughout the world are more vulnerable to predation because of ocean warming, new research suggests.

Scientists identify essential factors for limb formation

Scientists at the Centro Nacional de Investigaciones Cardiovasculares (CNIC), working in partnership with researchers at the Institut de Recherches Cliniques de Montréal (IRCM) in Canada, have identified Meis transcription ...

Designing soft materials that mimic biological functions

Northwestern Engineering researchers have developed a theoretical model to design soft materials that demonstrate autonomous oscillating properties that mimic biological functions. The work could advance the design of responsive ...

Mystery of four-horned goats and sheep finally solved

Some members of the Bovidae family have additional horns. In fact, a few local breeds of sheep, which have been selected by many generations of breeders, are known for their multiple horns. Some goats may spontaneously develop ...

How an embryo tells time

It is estimated that the majority of pregnancies that fail do so within the first seven days after fertilization, before the embryo implants into the uterus. In this time period, a complicated cascade of events occurs with ...

How the insect got its wings: Scientists (at last!) tell the tale

It sounds like a "Just So Story"—"How the Insect Got its Wings"—but it's really a mystery that has puzzled biologists for over a century. Intriguing and competing theories of insect wing evolution have emerged in recent ...

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