User:Jtwsaddress42/Quotes/Edelman, Gerald M. 1987(a)b

Historegulatory, Selector, & Morphoregulatory Genes "'The key idea may be summarized roughly as follows: These molecules link cells into collectives whose borders are defined by CAMs of different specificity. The binding properties of cells linked by the CAMs are dynamically controlled by the cells themselves as a result of signals exchanged between collectives.  Cell binding in turn regulates cell motion and further signalling, and thus the ensuing forms.  Control of the expression of CAM genes by the specific biochemistry affecting CAM regulatory genes at particular morphologic sites assures constancy of form in a species.  But because the main function of CAMs is to regulate dynamic cellular processes and not specify cell addresses exactly, variability is also introduced during development.'

Gerald M. Edelman (1987)"