1. Ingested foreign (phage M13) DNA survives transiently in the gastrointestinal tract and enters the bloodstream of mice

   • Rainer Schubbert
   • Clarissa Lettmann
   • Walter Doerfler

   Original Articles Pages: 495 - 504

2. The new class 11 transposon Tn163 is plasmid-borne in two unrelated Rhizobium leguminosarum biovar viciae strains

   • Andreas Ulrich
   • Alfred Pühler

   Original Articles Pages: 505 - 516

3. Temperature-sensitive mutants of hsp82 of the budding yeast Saccharomyces cerevisiae

   • Yoko Kimura
   • Seiji Matsumoto
   • Ichiro Yahara

   Original Articles Pages: 517 - 527

4. Replacement-like recombination induced by an integration vector with a murine homology flank at the immunoglobulin heavy-chain locus in mouse and rat hybridoma cells

   • Peter Lang
   • Ralph Mocikat

   Original Articles Pages: 528 - 538

5. A 4.6 kb DNA region of Rhizobium meliloti involved in determining urease and hydrogenase activities carries the structural genes for ureas (ureaA, ureB, ureC) interrupted by other open reading frames

   • Gerhard Miksch
   • W. Arnold
   • A. Pühler

   Original Articles Pages: 539 - 550

6. Chromosome 2-specific DNA clones from flow-sorted chromosomes of tomato

   • K. Arumuganathan
   • Gregory B. Martin
   • Elizabeth D. Earle

   Original Articles Pages: 551 - 558

7. Identification of two loci involved in phytochrome expression in Nicotiana plumbaginifolia and lethality of the corresponding double mutant

   • Yvan Kraepiel
   • Marc Jullien
   • Lee Pratt

   Original Articles Pages: 559 - 565

8. Binding of ArsR, the repressor of the Staphylococcus xylosus (pSX267) arsenic resistance operon to a sequence with dyad symmetry within the ars promoter

   • Ralf Rosenstein
   • Klaus Nikoleit
   • Friedrich Götz

   Original Articles Pages: 566 - 572

9. Analysis of the chromosomal distribution of transposon-carrying T-DNAs in tomato using the inverse polymerase chain reaction

   • Colwyn M. Thomas
   • David A. Jones
   • Jonathan D. G. Jones

   Original Articles Pages: 573 - 585

10. Expression of genes encoding the tobacco chloroplast phosphate translocator is not light-regulated and is repressed by sucrose

    • Jacqueline S. Knight
    • John C. Gray

    Original Articles Pages: 586 - 594

11. The Tn5 bleomycin resistance gene confers improved survival and growth advantage on Escherichia coli

    • Michel Blot
    • Bernhard Hauer
    • Gilles Monnet

    Original Articles Pages: 595 - 601

12. Interacting cis elements in the plastocyanin promoter from spinach ensure regulated high-level expression

    • Th. Lübberstedt
    • R. Oelmüller
    • R. G. Herrmann

    Original Articles Pages: 602 - 613

13. Control of replication of the Lactobacillus pentosus plasmid p353-2: evidence for a mechanism involving transcriptional attenuation of the gene coding for the replication protein

    • Peter H. Pouwels
    • Nicole van Luijk
    • Mark Posno

    Original Articles Pages: 614 - 622

14. Analysis of the fimB promoter region involved in type 1 pilus phase variation in Escherichia coli

    • William R. Schwan
    • H. S. Seifert
    • James L. Duncan

    Original Articles Pages: 623 - 630