1. Roles of trace metals in transcriptional control of microbial secondary metabolism

   • Eugene D. Weinberg

   Mini Review Pages: 191 - 196

2. Ferrioxamine transport mutants and the identification of the ferrioxamine receptor protein (FoxA) inErwinia herbicola (Enterobacter agglomerans)

   • Ingrid Berner
   • Günther Winkelmann

   Original Articles Pages: 197 - 202

3. Iron-regulated envelope proteins of mycobacteria grown in vitro and their occurrence inMycobacterium avium andMycobacterium leprae grown in vivo

   • Manjula Sritharan
   • Colin Ratledge

   Original Articles Pages: 203 - 208

4. Characterization of siderophore-mediated iron transport inGeotrichum candidum, a non-siderophore producer

   • Henia Mor
   • Isaac Barash

   Original Articles Pages: 209 - 213

5. Uptake and release of⁶³Ni²⁺ byXenopus embryos during early cleavage stages

   • F. William Sunderman Jr
   • Frank J. Mongillo
   • Sean M. Brennan

   Original Articles Pages: 214 - 218

6. Is cadmium released from metallothionein in rejected human kidneys?

   • Carl-Gustaf Elindert
   • Monica Nordberge
   • Brita Palm

   Original Articles Pages: 219 - 222

7. Impact of bimetallic combinations of Cu, Ni and Fe on growth rate, uptake of nitrate and ammonium,¹⁴C0₂ fixation, nitrate reductase and urease activity ofChlorella vulgaris

   • Nirupama Mallick
   • A. K. Singh
   • L. C. Rai

   Original Articles Pages: 223 - 228

8. Effect of four heavy metals on the biology of Nostoc muscorum

   • L. C. Rai
   • M. Raizada
   • S. K. Dubey

   Original Articles Pages: 229 - 234

9. Cd and Zn uptake in macrophyceae from Greek coasts

   • S. Haritonidis
   • G. Nikolaidis

   Original Articles Pages: 235 - 238