The present invention provides a dendritic cell modulatory protein which modulates, and preferably inhibits, the differentiation and/or maturation of mammalian dendritic cells. The invention also provides proteins comprising conserved motifs found in such proteins as well as pharmaceutical compositions comprising the dendritic cell modulatory protein and homologs and active fragments thereof, antibodies thereto and methods of treatment which utilize such proteins, homologs, fragments and antibodies.
