An electrical impulse cannot directly cross the gap so a different mechanism has to be used. Between impulses the transmitter molecules are rapidly removed from the synaptic cleft to prevent ...

The conditions are controlled in two ways with chemical and nervous responses ... Receptors are groups of specialised cells. They detect a change in the environment (stimulus) and stimulate ...

There was, however, a tissue that seemed to belie cell theory — nervous tissue. Because of its softness and fragility, it was difficult to handle and susceptible to deterioration. But it was ...

Gene therapy in the central nervous system (CNS ... Germany). After erylysis, cells labeled with Mac-1-Pe, B220-Pe, Gr-1-Pe and CD4-Pe (Pharmingen, Heidelberg, Germany), were analyzed for GFP ...