1. Genetic variation in the genus Bufo I. An extreme degree of transferrin and albumin polymorphism in a population of the American toad (Bufo americanus)

   • Sheldon I. Guttman
   • Kenneth G. Wilson

   OriginalPaper Pages: 329 - 340

2. Studies on the xanthine oxidase activity of mammalian cells

   • Horst Brunschede
   • Robert S. Krooth

   OriginalPaper Pages: 341 - 350

3. Oxidative enzymes of the lanceolate mutant in tomato: A reappraisal

   • John L. Caruso
   • James H. Glier

   OriginalPaper Pages: 351 - 355

4. Effects of bacterial products on a Paramecium esterase

   • I. Gibson
   • A. Cavill

   OriginalPaper Pages: 357 - 364

5. Molecular weight relationships of the esterases in Cepaea nemoralis and Cepaea hortensis (Mollusca: Helicidae) and their genetic implications

   • G. S. Oxford

   OriginalPaper Pages: 365 - 382

6. Studies of a homologous gene-enzyme system, Esterase C, in Drosophila melanogaster and Drosophila simulans

   • Costas D. Triantaphyllidis
   • C. Christodoulou

   OriginalPaper Pages: 383 - 390

7. Structural comparisons between chicken low molecular weight immunoglobulin heavy chains and human γ chains

   • James C. Travis
   • Bob G. Sanders

   OriginalPaper Pages: 391 - 401

8. Is hemoglobin A₂ important?

   • T. H. Day

   OriginalPaper Pages: 403 - 411