Mesenchymal stem cells express serine protease inhibitor to evade the host immune response.
El Haddad N, Heathcote D, Moore R, Yang S, Azzi J, Mfarrej B, Atkinson M, Sayegh MH, Lee JS, Ashton-Rickardt PG, Abdi R. Mesenchymal stem cells express serine protease inhibitor to evade the host immune response. Blood. 2011 Jan 27; 117(4):1176-83.