2005_campbl11

2005_campbl11 - Chapter 11: Cell Communication Important...

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Chapter 11: Cell Communication
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Important Point:
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Signal-Transduction Emphasis This chapter’s emphasis is on signals that are released from one cell and allowed to freely diffuse to a second (or more) recipient cell(s) These communications are deliberately initiated, received, and interpreted in order to increase the physiological coordination of the cells in multicellular organisms We will consider in particular those events that follow the reception of a chemical signal We will not dwell on the purpose of the signal We also will not dwell on why and how a given cell releases a given signal
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Signaling with Direct Contact
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Local Signaling w/o Direct Contact e.g., interferon release by viral-infected cells
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Long-Distance Signaling
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Long-Distance Diffusion Note how specificity is determined by presence/absence of receptor protein
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Signalling, Free-Living Cells
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Cell-Cell Chemical Signaling Three general categories of chemical signaling: Cytoplasmic connections between cells
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2005_campbl11 - Chapter 11: Cell Communication Important...

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