Analysis of OCZF mRNA expression in osteoclasts from rat mandible by in situ hybridization. Sections were hybridized with a digoxygenin-labeled antisense (A and B) or sense (C) RNA probe. (A and B) The intense signal of OCZF mRNA is detectable in the osteoclasts with antisense RNA probe (the arrows). (C) No signal was observed in control experiment in which sense RNA was used in hybridization. (Original magnification × 239.)