Caption The atomic structure of C5 (blue) bound to the C5-binding part of eculizumab (yellow) shows how eculizumab blocks the cleavage of C5 in blood circulation. This rescues the red blood cells ...

The image shows the compound Tat-P4-(C5)2 after an injection into the spinal cord. The compound (purple) penetrates the nerve cells of the spinal cord (yellow), but not the surrounding cells (the ...