Schwann cells are involved in myelin formation around axons in the peripheral nervous system.

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#Id: 3878

#Unit 5. Developmental Biology

Prestalk cells act as altruists which die for dispersion of kin cells.

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#Id: 6566

#Unit 7. System Physiology – Animal

Glucagon receptors located on the same hepatic cells to activate phospholipase C, and the resulting increase in cytoplasmic Ca2+ also stimulates glycogenolysis

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#Id: 10443

#Unit 4. Cell Communication and Cell Signaling

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#Id: 952

#Unit 5. Developmental Biology

In sea urchins, the acrosome reaction is initiated by sulfate-containing polysaccharides in the egg jelly.

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#Id: 8973

#Unit 11. Evolution and Behavior

The current record holder is the gene Dscam in Drosophila. Alternative splicing of its 95 exons could potentially produce more than 38,000 kinds of proteins from this single gene.