Lack of expression of cathelin proteins. First panel shows Northern blot of C/EBPɛ−/− and wild-type bone marrow cells examined for expression of MCRP. Second panel shows that the lanes were balanced for intact RNA by reprobing Northern blot with β-actin. Third panel displays RT-PCR for murine cathelin homolog B9, and the fourth panel assures that cDNA were intact by showing their equal expression of GAPDH. Both genes were markedly diminished in their expression in bone marrow cells from C/EBPɛ−/− mice.