Gerard Ahern
![Gerard Ahern](/assets/img/authors/unknown.jpg)
Gerard Ahern
addition additional appears behind cells entirely immune machinery physical point surprised
In addition to the physical contact, it surprised us to find that these immune cells also have machinery to take up serotonin and to secrete it in an excitatory manner. The point behind this transmission is not entirely clear, but it appears to be an additional way of stimulating a T cell response.