1. Cephalexin synthesis using immobilizedXanthomonas citri cells

   • Ik H. Kim
   • D. H. Nam
   • Dewey D. Y. Ryu

   Original Articles Pages: 195 - 202

2. Heparin-sepharose as a tool in the subcellular fractionation of a polyamine-rich organ (rat ventral prostate)

   • Bruna Tadolini
   • Luciana Cabrini

   Original Articles Pages: 203 - 211

3. The use of an immobilized enzyme nylon tube reactor incorporating a four enzyme system for creatinine analysis

   • Ron Ginman
   • Janet S. Colliss
   • John M. Knox

   Original Articles Pages: 213 - 226

4. p-Nitrophenylcyanate—An efficient, convenient, and Nonhazardous substitute for cyanogen bromide as an activating agent for sepharose

   • Joachim Kohn
   • Reuben Lenger
   • Meir Wilchek

   Original Articles Pages: 227 - 235

5. Enzymatic synthesis of flavin adenine dinucleotide

   • Sakayu Shimizu
   • Kiyoshi Yamane
   • Hideaki Yamada

   Original Articles Pages: 237 - 247

6. Botryococcus braunii an unusual hydrocarbon-producing alga

   • Fred R. Wolf

   Review Pages: 249 - 260

7. Patents and literature

   • S. L. Lee

   Announcement Pages: 261 - 271

8. News and views

   • Linda L. Lasure

   News Pages: 273 - 273

9. Protein Purification R. K. Scopes, Editor

   • A. H. Nishikawa

   Book Review Pages: 274 - 275