IPTG (isopropyl b-D-1-thiogalactopyranoside) 

X-gal (5-bromo4-chloro-3-indolyl-b-D-galactopyranoside). When acted on by that enzyme, X-gal releases a blue color that makes it useful as substrate in assays.

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#Id: 6846

#Unit 5. Developmental Biology

Induction

Kind of interaction in which one group of cells changing the behavior of an adjacent set of cells, thereby causing them to change their shape, mitotic rate, or cell fate. 

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#Id: 6847

#Unit 5. Developmental Biology

There are two components of inductive interaction:

Inducer

Responder

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#Id: 6848

#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.

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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#Id: 6981

#Unit 5. Developmental Biology

A stem cell retains the ability to divide and re-create itself while also having the ability to generate progeny capable of specializing into a more differentiated cell type. 

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#Id: 6982

#Unit 5. Developmental Biology

Stem cells are sometimes referred to as “undifferentiated” due to this maintenance of proliferative properties. ted cell type.