In vivo induction of Ia antigens on rat keratinocytes by γ-interferon

Abstract
Recombinant rat IFN-.gamma. was found to induce Ia antigen expression on rat keratinocytes in vivo. Strong expression of Ia antigen on keratinocytes of rat ears was produed after intradermal injections of 10,000 U IFN-.gamma. once daily successive days. The expression was still pronounced 2 days after the last injection, but had disappeared 4 days later.