- Nod1 acts as an intracellular receptor to stimulate chemokine production and neutrophil recruitment in vivo. Masumoto, J., Yang, K., Varambally, S., Hasegawa, M., Tomlins, S.A., Qiu, S., Fujimoto, Y., Kawasaki, A., Foster, S.J., Horie, Y., Mak, T.W., Núñez, G., Chinnaiyan, A.M., Fukase, K., Inohara, N. J. Exp. Med. (2006)