Cell line- Genetically identical cells that divide indefinitely and can be cultured in the laboratory. Heterokaryon- Cell possessing two nuclei derived from different cells through cell fusion.

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#Unit 5. Developmental Biology

There are two components of inductive interaction:

 Inducer

 Responder

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#Unit 5. Developmental Biology

Inducer 

the tissue that produces a signal (or signals) that changes the cellular behavior of the other tissue.

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#Unit 5. Developmental Biology

Responder, 

the cell or tissue being induced.

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#Unit 5. Developmental Biology

Cells of the responding tissue must have both, 

A receptor protein for the inducing factor 

The ability to respond to the signal

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#Unit 5. Developmental Biology

Competence 

The ability to respond to a specific inductive signal

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#Unit 5. Developmental Biology

Reciprocal induction occurs when the two interacting tissues are both inducers and are competent to respond to each other’s signals.