That Stinging Sensation: Modularity and the Origin of the Stinging Cell.

Abstract excerpt

All cells arise through division of other cells; thus, cells with new functions (novel cell types) must evolve from ancestral cells with a different function. How, then, do novel cell types arise? Each cell is a composite of many functions that, together, confer a cell's phenotype. A single cell might have both the capacity to sense the environment and to secrete a specialized product. Allowing those two...

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