1. Cell culture standards — time for a rethink?

   • J. M. Mowles
   • A. Doyle

   Editorial Comment Pages: 107 - 108

2. Editors comment

   EditorialNotes Pages: 108 - 108

3. Animal cells — the breakthrough to a dominant technology

   • Bryan Griffiths

   Review Pages: 109 - 116

4. Tissue culture in the study of cancer

   • Salvatore Casillo
   • Albino La Pera
   • Luigi Frati

   Review Pages: 117 - 122

5. Stimulation of proliferation and immunoglobulin M production by lactoferrin in human-human and mouse-mouse hybridomas cultures in serum-free conditions

   • Koji Yamada
   • Ichiro Ikeda
   • Hiroki Murakami

   Original Research Papers Pages: 123 - 131

6. Expression of human beta-interferon in Namalwa KJM-1 which was adapted to serum-free medium

   • Hiromasa Miyaji
   • Tamio Mizukami
   • Seiga Itoh

   Original Research Papers Pages: 133 - 140

7. Transfection of mouse cells with thymidine kinase gene of herpes simplex virus

   • Chee Gun Lee
   • Chan Gil Kim
   • Sang Dai Park

   Original Research Papers Pages: 141 - 147

8. Rapid in vitro transformation system for liver epithelial cells by iron chelate, Fe-NTA

   • Masayasu Yamada
   • Michiyasu Awai
   • Tohru Okigaki

   Original Research Papers Pages: 149 - 156

9. A novel acid proteinase relased by hybridoma cells

   • Daniel W. Karl
   • Margaret Donovan
   • Michael C. Flickinger

   Original Research Papers Pages: 157 - 169

10. A practical test for in vitro evaluation of photosensitization: Assessment with hematoporphyrin derivative (HPD)

    • Alain Croisy
    • Danièle Carrez
    • Danielle Zilberfarb

    Original Research Papers Pages: 171 - 178

11. Evaluation of mitochondrial content and activity with nonyl-acridine orange and rhodamine 123: flow cytometric analysis and comparison with quantitative morphometry

    • G. Lizard
    • Y. Chardonnet
    • J. Thivolet

    Original Research Papers Pages: 179 - 188

12. Purification and characterization of immunoglobulin production stimulating factor derived from human B lymphoblastoid HO-323 cells

    • Kazuhisa Toyoda
    • Takuya Sugahara
    • Hiroki Murakami

    Original Research Papers Pages: 189 - 197

13. Patent report

    Announcement Pages: 199 - 202

14. Book Review

    • Colin Harbour

    BookReview Pages: 203 - 204

15. A European database for animal cell lines: Graz, Austria, 2 September 1989

    • M. Brewis

    Meeting Report Pages: 205 - 206

16. Announcement

    Announcement Pages: 207 - 208