This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. IkB kinase alpha knock out mouse exhibits developmental defects in skin, limbs and skeleton. In our previous studies we have shown that the epidermis in mice lacking Ikkalpha do not have the two upper layers, stratum granulosum and stratum corneum by electrom microscopy. This finding is also supported from immuno-histochemistry data for the terminal differentiation markers. Thus we have shown that IKK alpha deficiency results in a complete block of keratinocyte differentioan..
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