Identification of proctolin in the central nervous system of the horseshoe crab, Limulus polyphemus, James R. Groome, Edward K. Tillinghast, Mark A. Townley, Alex Vetrovs, Winsor H. Watson III, Donald F. Hunt, Patrick R. Griffin, Janice E. Alexander, Jeffery Shabanowitz
Molecular, Cellular & Biomedical Sciences