Although macrophage migration inhibitory factor (MIF) was originally identi
fied as a lymphokine that inhibits the migration of macrophages, its ubiqui
tous expression suggests it may have a role beyond the immune system. Here
we report a detailed characterization of MIF expression during mouse embryo
genesis. The MIF expression pattern was found to parallel tissues specifica
tion and organogenesis. (C) 1999 Elsevier Science Ireland Ltd. All rights r
eserved.