Adamo, S. A. (2010). Why should an immune response activate the stress response? Insights from the insects (the cricket Gryllus texensis). Brain, behavior, and immunity, 24(2), 194-200.
Alkema, M. J., Hunter-Ensor, M., Ringstad, N., & Horvitz, H. R. (2005). Tyramine functions independently of octopamine in the Caenorhabditis elegans nervous system. Neuron, 46(2), 247-260.