Synaptic signal stem clip.  The process of synaptic signaling is similar to paracrine signaling, with the exception of a specific structure called the synapse. This structure exists between the sending cell and the receiving cell and is necessary for synaptic signaling to occur. For instance, it enables communication between a neuron and the muscle it controls through neural activity.  Polymime is a UK based animation company offering royalty free medical stock images and medical stock videos. Other services including 3D rending, medical animation interactive 3D, vfx and more.