1. Preface

   • Mihály Szilágyi
   • Ernő Tyihák

   Announcement 30 December 1998 Pages: 165 - 165

2. An Evolutionary Role of Formaldehyde

   • M. P. Kalapos

   OriginalPaper 30 December 1998 Pages: 167 - 171

3. Related ^αN- and ^εN-Methyltransferases Methylate the Large and Small Subunits of Rubisco

   • Z. Ying
   • R. M. Mulligan
   • R. L. Houtz

   OriginalPaper 30 December 1998 Pages: 173 - 184

4. Methylation and Gene Mutation in Eukaryotic DNA

   • C.-Q. Liu
   • J. F. Huang
   • W. B. Liu

   OriginalPaper 30 December 1998 Pages: 185 - 191

5. Role of Formaldehyde in Direct Formation of Glycine and Serine in Bean Leaves

   • Á. Nosticzius

   OriginalPaper 30 December 1998 Pages: 193 - 199

6. Effect of Methionine Enrichment on the Biological Activities of Food Proteins

   • Gyöngyi Hajós
   • Sz. Farkas
   • Marianne Polgár

   OriginalPaper 30 December 1998 Pages: 201 - 207

7. L-Carnitine as Essential Methylated Compound in Animal Metabolism. an Overview

   • M. Szilágyi

   OriginalPaper 30 December 1998 Pages: 209 - 218

8. Addition of CH₂O to Arginine — A Theoretical Study by ab initio Method

   • Cornelia Kozmutza
   • E. M. Evleth
   • J. Pipek

   OriginalPaper 30 December 1998 Pages: 219 - 224

9. Formaldehyde Cycle and the Natural Formaldehyde Generators and Capturers

   • E. Tyihák
   • L. Albert
   • B. Szende

   OriginalPaper 30 December 1998 Pages: 225 - 238

10. Formaldehyde in the Plant Kingdom

    • G. Blunden
    • B. G. Carpenter
    • E. Tyihák

    OriginalPaper 30 December 1998 Pages: 239 - 246

11. Plant Tissue Culture as a Model for Study of Diversity in Formaldehyde Binding

    • I. László
    • Éva Szőke
    • L. Albert

    OriginalPaper 30 December 1998 Pages: 247 - 252

12. Determination of Endogenous Formaldehyde in Plants (Fruits) Bound to L-Arginine and its Relation to the Folate Cycle, Photosynthesis and Apoptosis

    • L. Trézl
    • L. Hullán
    • B. Szende

    OriginalPaper 30 December 1998 Pages: 253 - 263

13. The Hydrazine Derivative Aminoguanidine Inhibits the Reaction of Tetrahydrofolic Acid with Hydroxymethylarginine Biomolecule

    • L. Hullán
    • L. Trézl
    • A. Csiba

    OriginalPaper 30 December 1998 Pages: 265 - 273

14. Induction of Resistance of Wheat Plants to Pathogens by Pretreatment with N-Methylated Substances

    • Klára Manninger
    • Mária Csősz
    • E. Tyihák

    OriginalPaper 30 December 1998 Pages: 275 - 280

15. Identification and Measurement of Resveratrol and Formaldehyde in Parts of White and Blue Grape Berries

    • Zsuzsa Király-Véghely
    • E. Tyihák
    • Gy. Kátay

    OriginalPaper 30 December 1998 Pages: 281 - 289

16. Relationship Between Dimedone Concentration and Formaldehyde Captured in Plant Tissues

    • Éva Sárdi
    • E. Tyihák

    OriginalPaper 30 December 1998 Pages: 291 - 301

17. The Use of HPLC for the Detection and Quantification of Formaldehyde in the Pteridophyta

    • Maricela Adrian-Romero
    • G. Blunden
    • E. Tyihák

    OriginalPaper 30 December 1998 Pages: 303 - 308

18. Drought Stress, Peroxidase Activity and Formaldehyde Metabolism in Bean Plants

    • Éva Stefanovits-Bányai
    • Éva Sárdi
    • I. Velich

    OriginalPaper 30 December 1998 Pages: 309 - 316

19. The Increase of Formaldehyde Level in Some Rare Pathological Cases of Teeth Determined with the Use of Quantitative TLC

    • T. Katarzyna Różyło
    • R. Siembida
    • Anna Jambrożek-Mańko

    OriginalPaper 30 December 1998 Pages: 317 - 322

20. Formaldehyde Generators and Capturers as Influencing Factors of Mitotic and Apoptotic Processes

    • B. Szende
    • E. Tyihák
    • Zs. Király-Véghely

    OriginalPaper 30 December 1998 Pages: 323 - 329

21. Reduction of Apoptosis of In Vitro Cultured Lymphocytes of HIV-Positive Persons By N^G-Hydroxy-Methylated-L-Arginine and 1’-Methyl-Ascorbigen

    • J. Bocsi
    • K. Nagy
    • B. Szende

    OriginalPaper 30 December 1998 Pages: 331 - 337

22. Formaldehyde Generation by N-Demethylation

    • H. Kalász
    • Mária Báthori
    • E. Tyihák

    OriginalPaper 30 December 1998 Pages: 339 - 344

23. Formaldehyde-Induced Modification of Hemoglobin in vitro

    • R. Farbiszewski
    • Elżbieta Skrzydlewska
    • Agnieszka Roszkowska

    OriginalPaper 30 December 1998 Pages: 345 - 352

24. Change of Biotransformation Steps of Formaldehyde Cycle in Water-Melon Plants after Infection with Fusarium Oxysporum

    • Éva Sárdi
    • E. Tyihák

    OriginalPaper 30 December 1998 Pages: 353 - 362

25. The effect of heat shock on the formaldehyde cycle in germinating acorns of European Turkey oak

    • L. Albert
    • Zs. I. Nemeth
    • Sz. Varga

    OriginalPaper 30 December 1998 Pages: 363 - 368

26. Changes in Formaldehyde Contents of Germinating Acorns of Quercus Cerris L. Under Low Temperature Stress Conditions

    • Zs. I. Németh
    • L. Albert
    • Sz. Varga

    OriginalPaper 30 December 1998 Pages: 369 - 374

27. Alteration of Endogenous Formaldehyde Level Following Mercury Accumulation in Different Pig Tissues

    • T. Rétfalvi
    • Zs. I. Németh
    • L. Albert

    OriginalPaper 30 December 1998 Pages: 375 - 379

28. Investigation of Some Methylated Compounds and Peroxidase Activity During Plant Ontogenesis in Snap Bean

    • Éva Sárdi
    • Éva Stefanovits-Bányai

    OriginalPaper 30 December 1998 Pages: 381 - 391

29. Formaldehyde as a Proof and Response to Various Kind of Stress in Some Basidiomycetes

    • Anna Jarosz-Wilkołazka
    • Monika Fink-Boots
    • A. Leonowicz

    OriginalPaper 30 December 1998 Pages: 393 - 403

30. Relationships Between Demethylase Activity, Formaldehyde and Oxygen During Incubation of Rhodococcus Erythropolis with Veratrate

    • Marzanna Paździoch-Czochra
    • Elżbieta Malarczyk

    OriginalPaper 30 December 1998 Pages: 405 - 412

31. Comparative Quantitative Chromatographic Determination of Formaldehyde in Different Groups of Physiological and Pathological Hard Tissues of Teeth

    • T. Katarzyna Różyło
    • R. Siembida

    OriginalPaper 30 December 1998 Pages: 413 - 419

32. Are the Reductions in Nematode Attack on Plants Treated with Seaweed Extracts the Result of Stimulation of the Formaldehyde Cycle?

    • T. Jenkins
    • G. Blunden
    • B. O. Gabrielsen

    OriginalPaper 30 December 1998 Pages: 421 - 427

33. Effect of 1’-Methylascorbigen on the Resistance Potential of Plants to Pathogens

    • Gy. Kátay
    • E. Tyihák

    OriginalPaper 30 December 1998 Pages: 429 - 436

34. Analogies and Differences in the Excited Reactions of Formaldehyde and D-Glucose

    • L. Trézl
    • L. Hullán
    • J. Pipek

    OriginalPaper 30 December 1998 Pages: 437 - 447

35. Microbial Urea-Formaldehyde Degradation Involves a New Enzyme, Methylenediurease

    • T. Jahns
    • Roswitha Schepp
    • H. Kaltwasser

    OriginalPaper 30 December 1998 Pages: 449 - 454

36. Differential Detection of N-Heterocyclic Compounds and their N-Methylated Derivatives by Immunoanalysis

    • Hong M. Le
    • Gyöngyvér Hegedűs
    • A. Székács

    OriginalPaper 30 December 1998 Pages: 455 - 462

37. Urea-Formaldehyde Resins and Free Formaldehyde Content

    • Viktória Vargha

    OriginalPaper 30 December 1998 Pages: 463 - 477

38. Announcement

    Announcement 30 December 1998 Pages: 479 - 479