Assertion: nervous system's cell | /r/CapableOf | secrete chemical substances
Facets:
Source sentences:
text: These phenomena suggest that electrically mediated junctional transmission is older than chemically mediated synaptic transmission, which would require that some epithelial cells secrete chemical substances.
text: Many investigators suspect that neurons originated from endothelial secretory cells that could secrete chemical substances, respond to stimulation, and conduct impulses.