1. Plant endogenous β-glucuronidase activity: how to avoid interference with the use of theE. coli β-glucuronidase as a reporter gene in transgenic plants

   • Anna Alwen
   • Rosa María Benito Moreno
   • Erwin Heberle-Bors

   Papers Pages: 63 - 70

2. Comparison of different techniques for gene transfer into mature and immature tobacco pollen

   • Eva Stöger
   • Rosa Maria Benito Moreno
   • Erwin Heberle-Bors

   Papers Pages: 71 - 78

3. Coexpression of thecys E andcys M genes ofSalmonella typhimurium in mammalian cells: a step towards establishing cysteine biosynthesis in sheep by transgenesis

   • Arapaut V. Sivaprasad
   • Elizabeth S. Kuczek
   • George E. Rogers

   Papers Pages: 79 - 92

4. A comparison of methods for delivering DNA to wheat: the application of wheat dwarf virus DNA to seeds with exposed apical meristems

   • Dong Fang Chen
   • Philip J. Dale

   Papers Pages: 93 - 100

5. Successful targeting of the mouse cystic fibrosis transmembrane conductance regulator gene in embryonal stem cells

   • Julia R. Dorin
   • Paul Dickinson
   • David J. Porteous

   Short Communication Pages: 101 - 105

6. Forthcoming papers

   Announcement Pages: 106 - 106