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10 Cards in this Set
- Front
- Back
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Induction
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Interaction at close range between two or more cells or tissues of different histories and properties.
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Inducer
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Tissue that produces a signal that changes the cellular behavior of the other tissue
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Responder
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Tissue being induced
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Competence
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The ability to respond to a specific inductive signal
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Competence Factor
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A surface protein that binds extracellular DNA and enables the cell to be transformed
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Reciprocal Induction
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The ability of an induced tissue to become an inducer for other tissue or the tissue that originally induced it
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Permissive Interaction
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The responding tissue contains all the potentials that are to be expressed, and need only an environment that allows the expression of these traits
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Instructive Interaction
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A signal from the inducing cells is necessary for initiating new gene expression in the responding cell
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Wessells' Principles Characteristics
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1) In the presence of tissue A, responding tissue B develops in a certain way
2) In the absence of tissue A, responding tissue B does not develop in that way. 3) In the absence of tissue A, but in the presence of tissue C, tissue B does not develop in that way |
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Epithelia
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Sheets or tubes of connected cells; can originate from any germ layer
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