1. The immunoglobulin heavy chain class switch

   • Peter D. Burrows
   • Max D. Cooper

   Current Thinking Pages: 97 - 111

2. Pseudomonas aeruginosa acid phosphatase and cholinesterase induced by choline and its metabolic derivatives may contain a similar anionic peripheral site

   • Teresita A. Lisa
   • Mónica N. Garrido
   • Carlos E. Domenech

   Original Articles Pages: 113 - 118

3. Fatty Acyl-CoAs as feedback regulators of hexose monophosphate shunt in rat adipocytes

   • Manuel Ros
   • Ana Cubero
   • Francisco J. Moreno

   Original Articles Pages: 119 - 123

4. Role of anions in the lymphocytolytic action of corticosteroids and fatty acids

   • A. F. Burton
   • W. L. Dunn

   Original Articles Pages: 125 - 129

5. Structural organization of high-M_r mammalian aminoacyl-tRNA synthetases

   • Chi V. Danga
   • Chuan V. Dang

   Original Articles Pages: 131 - 136

6. Tuftsin (Thr-Lys-Pro-Arg), a natural modulator of macrophage activity: further studies

   • Nancy J. Bump
   • Victor A. Najjar

   Original Articles Pages: 137 - 142

7. Effect of estrogen on Xenopus laevis albumin mRNA levels

   • Vasso Zongza-Dimitriadisa
   • Giorgos J. Dimitriadis

   Original Articles Pages: 143 - 148

8. Quantization of chloroplast DNA using dot blot filter hybridization with double-stranded probes

   • Marvin A. Smith

   Original Articles Pages: 149 - 156

9. Surface proteins in different isolates of Trypanosoma cruzi epimastigotes

   • N. S. Gonzalez
   • D. O. Sanchez
   • I. D. Algranati

   Original Articles Pages: 157 - 164

10. What's new in lysozyme research?

    • Pierre Jollès
    • Jacqueline Jollès

    Review Pages: 165 - 189