1. Cdc2-kinases, cyclins, and the switch from proliferation to polyploidization

   • W. Nagl

   Review Article Pages: 143 - 150

2. Response of NADH oxidation and growth in K-562 cells to the antitumor sulfonylurea, N-(4-methylphenylsulfonyl)-N′-(4-chlorophenyl)urea (LY181984)

   • S. Y. Moya-Camarena
   • D. J. Morré
   • D. M. Morré

   Original Papers Pages: 151 - 160

3. Analysis of the cell cycle in an arbuscular mycorrhizal fungus by flow cytometry and bromodeoxyuridine labelling

   • V. Bianciotto
   • G. Barbiero
   • P. Bonfante

   Original Papers Pages: 161 - 169

4. Cytoskeletal aspects of nuclear migration during tip-growth in the fernAdiantum protonemal cell

   • A. Kadota
   • M. Wada

   Original Papers Pages: 170 - 179

5. Absence of plasma membrane H⁺-ATPase in plasmodesmata located in pit-fields of the young reactive pulvinus ofMimosa pudica L.

   • P. Fleurat-Lessard
   • S. Bouché-Pillon
   • J. -L. Bonnemain

   Original Papers Pages: 180 - 185

6. Structure, function, and formation of extrusive organelles — microtoxicysts in the rhizopodPenardia cometa

   • K. A. Mikrjukov

   Original Papers Pages: 186 - 191

7. Steric hindrance and its effect on chromosome movement inVicia faba somatic cells

   • J. L. Oud
   • E. M. Nickless
   • R. E. Rowland

   Original Papers Pages: 192 - 201

8. Uptake and transport of glucagon by rat liver: evidence for transcytotic pathway

   • V. Iwanij
   • H. Stukenbrok

   Original Papers Pages: 202 - 212

9. Distribution of pectins in cell walls of maize coleoptiles and evidence against their involvement in auxin-induced extension growth

   • T. M. Schindler
   • R. Bergfeld
   • P. Schopfer

   Original Papers Pages: 213 - 224

10. Centrin association with the flagellar apparatus in spores ofPhytophthora cinnamomi

    • J. D. I. Harper
    • F. Gubler
    • A. R. Hardham

    Original Papers Pages: 225 - 235

11. Vacuolar accumulation of acridine orange and neutral red in zygotic and somatic embryos of carrot (Daucus carota L.)

    • A. C. J. Timmers
    • U. K. Tirlapur
    • J. H. N. Schel

    Original Papers Pages: 236 - 244

12. The course of chloroplast DNA replication and its relationship to other reproductive processes in the chloroplast and nucleocytoplasmic compartment during the cell cycle of the algaScenedesmus quadricauda

    • V. Zachleder
    • S. Kawano
    • T. Kuroiwa

    Original Papers Pages: 245 - 251

13. New arrays of cytoplasmic microtubules in the fission yeastSchizosaccharomyces pombe

    • A. Pichová
    • S. D. Kohlwein
    • M. Yamamoto

    Original Papers Pages: 252 - 257

14. Ultrastructure and phototactic action spectra of two genera of cryptophyte flagellate algae, Cryptomonas and Chroomonas

    • M. Erata
    • M. Kubota
    • M. Watanabe

    Original Papers Pages: 258 - 266

15. Quantitative analysis of the distribution of organelles in tobacco pollen tubes: implications for exocytosis and endocytosis

    • J. Derksen
    • T. Rutten
    • G. Rongen

    Original Papers Pages: 267 - 276

16. Erratum

    • J. M. Pope

    Erratum Pages: 277 - 277