1. Cellular immune reactions directed against Toxoplasma gondii with special emphasis on the central nervous system

   • W. Däubener
   • Ulrich Hadding

   REVIEW Pages: 195 - 206

2. Immune responses to filarial infection in laboratory mice

   • A. Hörauf
   • Bernhard Fleischer

   REVIEW Pages: 207 - 215

3. Mixed vaginal infections of Balb/c mice with low virulent herpes simplex type 1 strains result in restoration of virulence properties: vaginitis/vulvitis and neuroinvasiveness

   • M. Lingen
   • F. Hengerer
   • D. Falke

   ORIGINAL INVESTIGATION Pages: 217 - 222

4. Tumor necrosis factor-α expression induced by anti-YopB antibodies coincides with protection against Yersinia enterocolitica infection in mice

   • Susanne Burdack
   • Annette Schmidt
   • H. U. Beuscher

   ORIGINAL INVESTIGATION Pages: 223 - 229

5. High rate of seroconversion following administration of a single supplementary dose of recombinant hepatitis B vaccine in Iranian healthy nonresponder neonates

   • F. Shokri
   • Abdollah Amani

   ORIGINAL INVESTIGATION Pages: 231 - 235

6. Human immunodeficiency virus type-1 envelope glycoprotein gp120 induces expression of fusion regulatory protein (FRP)-1/CD98 on CD4⁺ T cells: a possible regulatory mechanism of HIV-induced syncytium formation

   • Shigeru Suga
   • Masato Tsurudome
   • Y. Ito

   ORIGINAL INVESTIGATION Pages: 237 - 243

7. HLA-dependent heterogeneous T cell response to Mycoplasma arthritidis-derived superantigen (MAS)

   • Lourdes Alvarez-Ossorio
   • Meike Johannsen
   • L. Rink

   ORIGINAL INVESTIGATION Pages: 245 - 251

8. Heterogeneity in the complement-dependent bacteriolysis within the species of Borrelia burgdorferi

   • S. Breitner-Ruddock
   • Reinhard Würzner
   • V. Brade

   ORIGINAL INVESTIGATION Pages: 253 - 260