1. Plasmids coding for enterotoxins, K88 antigen and colicins in porcineEscherichia coli strains of O-group 149

   • A. Franklin
   • O. Söderlind
   • R. Möllby

   OriginalPaper Pages: 63 - 72

2. Hepatitis A virus in cell culture

   • Bertram Flehmig

   OriginalPaper Pages: 73 - 81

3. Hepatitis A virus in cell culture

   • B. Flehmig
   • A. Vallbracht
   • G. Wurster

   OriginalPaper Pages: 83 - 89

4. Productive infection of chick embryo cells by influenza viruses tightly bound on substratum

   • R. T. C. Huang
   • K. Wahn
   • R. Rott

   OriginalPaper Pages: 91 - 98

5. Complement-fixing antibodies to human cytomegalovirus induced early nuclear antigens in mononucleosis

   • L. Gergely
   • Judith Czeglédy
   • L. Váczi

   OriginalPaper Pages: 99 - 108

6. Regulation in vitro of human natural killer (NK) cell activity

   • J. G. Aaskov
   • Debra A. Dalglish

   OriginalPaper Pages: 109 - 116

7. Immunogenicity of some common thermolabile surface antigens ofEscherichia coli

   • F. Ørskov
   • J. C. Larsen
   • I. Ørskov

   OriginalPaper Pages: 117 - 133

8. Human antibodies recognizing the envelope glycoprotein of the baboon endogenous virus BaEV are of heterophil origin

   • Dorothee Wernicke
   • Reinhard Kurth

   OriginalPaper Pages: 135 - 143