Endogeny (biology)

Endogenous substances and processes are those that originate from within a system such as an organism, tissue, or cell.[1]

For endogeny or endogeneity in other contexts, see Endogeneity and Exogeny.

Endogenous substances and processes contrast with exogenous ones, such as drugs, which originate from outside of the organism.

References
  1. "Endogenous | Define Endogenous at Dictionary.com". Dictionary.reference.com. Retrieved 2011-07-11.
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