[soluble molecules that transmit biological signals between cells. ( CSP )]
UMLS (CSP) C0596284 - Biologically Active Substance
Relation/PAR: Biological Agent
Relation/CHD: chemoattractant
eicosanoid
Growth Agents
Endocrine Gland Secretion
neuropeptide
Neurotransmitter
EDRF
phytohormone
Cytokine
endogenous opiate
ephrin
endocannabinoid