LECTURE3N

LECTURE3N - Interaction between cells to form new...

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Induction: An interaction between one cell or tissue (inducer) and another cell or tissue (responder) which results in the responding tissue changing its properties. Interaction between cells to form new identities induction .
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Induction of mesoderm by endoderm
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Cell-Cell interaction to enhance differences or similarities SIGNALS RECEPTORS Wolpert Fig. 1.23
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Mechanisms of inductive interactions Gilbert Fig. 6.9 Extracellular marix induces cell shape changes: membrane processes. cell contacts influence the other cell undergo different fate.
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Long-range signaling by morphogens gives positional information A morphogen is a substance that is present in a gradient and produces a different cellular response depending on its concentration . Different concentrations are read by cells to decide their position within the embryo. Cells at different distances from the source of the morphogen will respond in different ways.
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French Flag Model Wolpert Fig.1.25 Origin of morphogen
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This note was uploaded on 04/07/2009 for the course BIO 4301 taught by Professor Hillis during the Spring '08 term at Baylor.

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LECTURE3N - Interaction between cells to form new...

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