1. On the origin of human tumors

   • John C. Petricciani

   Invited Paper Pages: 361 - 364

2. Fish cell lines: Establishment of a line from ovaries of channel catfish

   • Paul R. Bowser
   • John A. Plumb

   New Cell Line Pages: 365 - 368

3. Establishment of a continuous cell line ofSpodoptera littoralis (lepidoptera; noctuidae)

   • D. L. Knudson
   • T. Lescott
   • T. W. Tinsley

   New Cell Line Pages: 369 - 370

4. Effect of silica on the proliferative behavior of human lung fibroblasts

   • Marlene Absher
   • Marianne Mortara

   OriginalPaper Pages: 371 - 376

5. Adenylate cyclase and phosphodiesterase activities in rat hepatocytes cultured in the presence and absence of dexamethasone

   • Jane C. Redshaw

   OriginalPaper Pages: 377 - 383

6. Characterization of invertebrate cell lines

   • C. A. Aldridge
   • D. L. Knudson

   OriginalPaper Pages: 384 - 391

7. Characterization of invertebrate cell lines

   • W. J. Tabachnick
   • D. L. Knudson

   OriginalPaper Pages: 392 - 398

8. Putrescine stimulates growth of human bronchial epithelial cells in primary culture

   • Gary D. Stoner
   • Curtis C. Harris
   • Robert D. Connor

   OriginalPaper Pages: 399 - 406

9. Keratinization and the effect of vitamin A in aggregates of a squamous carcinoma cell line NBT II

   • R. Tchao

   OriginalPaper Pages: 407 - 414

10. Growth of normal human mammary cells in culture

    • M. Stampfer
    • R. C. Hallowes
    • A. J. Hackett

    OriginalPaper Pages: 415 - 425

11. Analysis of growth dynamics and the relationship to the fluctuations in alkaline phosphatase in two strains of cells of HeLa S3 derivation

    • Prem Brahmacupta
    • G. Melnykovych

    OriginalPaper Pages: 426 - 432

12. Characterization of mouse fetal lung cells cultured on a pigskin substrate

    • Yutaka Yoshida
    • Virginia Hilborn
    • Aaron E. Freeman

    OriginalPaper Pages: 433 - 445

13. Lymphoid cell line identification and the detection of cross contamination

    • Betty R. Conner
    • Soldano Ferrone
    • Ronald Glaser

    OriginalPaper Pages: 446 - 452