- The human specific CCR1 antagonist CP-481,715 inhibits cell infiltration and inflammatory responses in human CCR1 transgenic mice. Gladue, R.P., Cole, S.H., Roach, M.L., Tylaska, L.A., Nelson, R.T., Shepard, R.M., McNeish, J.D., Ogborne, K.T., Neote, K.S. J. Immunol. (2006)