As the gradient decays, the position of this threshold value moves at varying speed along the membrane, depending on the cell shape. Thus, via this hierarchy of protein concentration profiles, the ...

a) A classical morphogen (pink) elicits differential gene expression (represented by the black, red and blue bars) by activating different genes at different concentrations. b) One example of such a ...

Explore how frogs, axolotls, and other amphibians use cutaneous respiration to absorb oxygen directly through their skin.

Researchers have succeeded for the first time in recording, in action, a light-driven sodium pump from bacterial cells. The findings promise progress in the development of new methods in neurobiology.

Molecular gradients have been established as a key driving force for cellular organization in the formation of early structures during embryonic development. A new live imaging technique has been ...

Scientists know that physical and biochemical signals can guide cells to make, for example, muscle, blood vessels or bone. But the exact recipes to produce the desired tissues have proved elusive. Now ...