Extracellular signaling in animals is carried out by _________. (a) Autocrine signaling (b) Endocrine signaling (c) Juxtacrine signaling (d) All of the above
Definition. Extracellular signalling molecules are cues, such as growth factors, hormones, cytokines, extracellular matrix components and neurotransmitters, designed to transmit specific information to target cells.
