Papers to Appear in Forthcoming Issues

Decreased Proteasome-Mediated Degradation in T Cells from the Elderly: A Role in Immune Senescence. Usha Ponnappan, Mingzheng Zhong, and Gina Uken Trebilcock. (Received 8/13/98; accepted 10/28/98.) ion of Systemic Th1 and Th2 Immune Responses by Oral Administration of Soluble Antigen and Diesel Exhaust Particles. Shin Yoshino and Masaru Sagai. (Received 9/16/98; accepted 11/16/98.) ring HLA-DR Molecules on Human Peripheral Monocytes Induces Their Death. André Thibeault, Hakima Zekki, Walid Mourad, Dominique Charron, and Reem Al-Daccak. (Received 11/3/98; accepted 11/17/98.) Dependent Nitric Oxide Production Is Not Linked to Resistance in Experimental African Trypanosomiasis. Cheryl J. Hertz and John M. Mansfield. (Received 6/26/98; accepted 11/18/98.) s of Cigarette Smoking on Fas/Fas Ligand Expression of Human Lymphocytes. Noboru Suzuki, Sueshige Wakisaka, Yuko Takeba, Shoji Mihara, and Tsuyoshi Sakane. (Received 6/1/98; accepted 12/1/98.) ential Expression and Costimulatory Effect of 4-1BB (CD137) and CD28 Molecules on Cytokine-Induced Murine CD8+Tc1 and Tc2 T Cells. Dass S. Vinay and Byoung S. Kwon. (Received 9/10/98; accepted 12/2/98.) lent Major Histocompatibility Complex/IgG1 Fusion Protein Induces Antigen-Specific T Cell ActivationIn Vitroandin Vivo.Constance M. Cullen, Stephen C. Jameson, Monica DeLay, Charles Cottrell, Eric T. Becken, Edmund Choi, and Raphael Hirsch. (Received 8/11/98; accepted 12/3/98.)