Assertion: endocrine system's hormone | /r/HasProperty | neurosecretion
Facets:
Source sentences:
text: The classical definition of an endocrine system has become harder to apply with the discovery of scattered cells rather than discrete glands that act as endocrine organs, of endocrine cells that affect themselves (autocrine effect) or nearby targets (paracrine effect) by diffusion through extracellular fluids rather than the bloodstream, and of neurons that secrete hormones (neurosecretion).