1. Comparison of virulence of clones of twoTrichomonas vaginalis strains by the subcutaneous mouse assay

   • K. Kuczyńska
   • L. Choromański
   • B. M. Honigberg

   Original Investigations Pages: 141 - 146

2. Lectin-induced agglutination of trophozoites of different species and strains ofEntamoeba

   • E. Ghadirian
   • E. Meerovitch

   Original Investigations Pages: 147 - 152

3. Ultrastructural observations on the sexual stages and oocyst formation inEimeria laureleus (Protozoa, Coccidia) of perch,Perca flavescens, from Lake Sasajewun, Ontario

   • Sherwin S. Desser
   • Lianxiang Li

   Original Investigations Pages: 153 - 164

4. Cellular pathology in mouse embryonic brain cells following in vitro penetration by sporozoites ofEimeria papillata

   • H. D. Danforth
   • Bill Chobotar
   • Rolf Entzeroth

   Original Investigations Pages: 165 - 171

5. The effects of sym. Triazinones on developmental stages ofEimeria tenella, E. maxima andE. acervulina: A light and electron microscopical study

   • H. Mehlhorn
   • G. Ortmann-Falkenstein
   • A. Haberkorn

   Original Investigations Pages: 173 - 182

6. Monostephanostomum yamagutii sp. nov. (Trematoda: Acanthocolpidae) — Intestinal Parasite of a Lethrinid Fish from the Red Sea

   • M. M. Ramadan

   Original Investigations Pages: 183 - 187

7. A monoclonal antibody raised against adultSchistosoma mansoni which recognizes a surface antigen on schistosomula

   • C. A. P. Tavares
   • R. de Rossi
   • S. R. Smithers

   Original Investigations Pages: 189 - 197

8. Fe-rich corpuscles inDiplogonoporus grandis detected using X-ray microanalysis

   • Akira I. Ishii

   Original Investigations Pages: 199 - 202

9. Intestinal cestodes of stray dogs in Jordan

   • Ahmad Q. Ajlouni
   • Elias K. Saliba
   • Ahmad M. Disi

   Original Investigations Pages: 203 - 210

10. Immunological unresponsiveness of lambs to infection withHaemonchus contortus

    • G. M. Monsell
    • A. H. Shubber
    • E. J. L. Soulsby

    Original Investigations Pages: 211 - 218

11. Immunological unresponsiveness of lambs to infection withHaemonchus contortus

    • A. H. Shubber
    • S. Lloyd
    • E. J. L. Soulsby

    Original Investigations Pages: 219 - 228

12. In vitro induction of lymphocyte responsiveness by aStrongylus vulgaris-derived mitogen

    • M. Bailey
    • S. Lloyd
    • E. J. L. Soulsby

    Original Investigations Pages: 229 - 242

13. Observations onSchistosoma intercalatum in south-east gabon

    • D. S. Brown
    • C. Sarfati
    • R. J. Knowles

    Original Investigations Pages: 243 - 253

14. Laboratory maintenance ofMonanema globulosa, a rodent filaria with skin-dwelling microfilariae

    • A. E. Bianco

    Original Investigations Pages: 255 - 264

15. Rickettsia conorii isolated fromRhipicephalus sanguineus introduced into Switzerland on a pet dog

    • O. Péter
    • W. Burgdorfer
    • P. Chatelanat

    Original Investigations Pages: 265 - 270

16. Unidentified cyst-forming Sporozoon causing encephalomyelitis and myositis in dogs

    • I. Bjerkås
    • S. F. Mohn
    • J. Presthus

    Short communications Pages: 271 - 274

17. Injection ofLymnaea stagnalis with miracidia ofTrichobilharzia ocellata

    • Elisabeth A. Meuleman
    • A. R. Huyer
    • T. W. J. Luub

    Short communications Pages: 275 - 278

18. Announcement

    Announcement Pages: 279 - 279