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Comment
. 2002 Jun;2(6):689-90.
doi: 10.1016/s1534-5807(02)00193-4.

Morphogen gradients, in theory

Matthew Freeman  1
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Free article
Comment

Morphogen gradients, in theory

Matthew Freeman. Dev Cell. 2002 Jun.
Free article

Abstract

The idea that morphogen gradients are established by a process of repeated cycles of exocytosis and endocytosis-so-called planar transcytosis-has been gaining acceptance. This is now challenged by a theoretical approach that experimental biologists should not dismiss; diffusive mechanisms of gradient formation may be correct after all.

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