1. A letter to young researchers in the biomedical sciences

   • C. Pilgrim
   • H. Höfler

   Opinion Pages: 1 - 1

2. Substance P in the suprachiasmatic nucleus of the rat: an immunohistochemical and in situ hybridization study

   • Jens D. Mikkelsen
   • Philip J. Larsen

   Originals Pages: 3 - 16

3. Stability of elastin in the developing mouse aorta: a quantitative radioautographic study

   • Elaine C. Davis

   Originals Pages: 17 - 26

4. Distribution and morphological features of nitrergic neurons in the porcine large intestine

   • Martine Barbiers
   • Jean-Pierre Timmermans
   • Marie H. A. De Groodt-Lasseel

   Originals Pages: 27 - 34

5. Distribution of actin in cone photoreceptor synapses

   • Frank Schmitz
   • Detlev Drenckhahn

   Originals Pages: 35 - 40

6. Experimentally induced colon cancer metastases in rat liver increase the proliferation rate and capacity for purine catabolism in liver cells

   • Geertruida N. Jonges
   • Ilse M. C. Vogels
   • Cornelis J. F. Van Noorden

   Originals Pages: 41 - 51

7. Connexin43 in rat pituitary: localization at pituicyte and stellate cell gap junctions and within gonadotrophs

   • T. Yamamoto
   • M. Z. Hossain
   • J. I. Nagy

   Originals Pages: 53 - 64

8. Heterogeneity in the immunolocalization of cytokeratin-specific monoclonal antibodies in the rat lung: evaluation of three different alveolar epithelial cell types

   • M. Kasper
   • T. Rudolf
   • M. Müller

   Originals Pages: 65 - 71

9. Immunolocalization of calcium vector protein and its target protein in amphioxus

   • Laurence Valette-Talbi
   • Michelle Comte
   • Jos A. Cox

   Originals Pages: 73 - 81

10. Demonstration of feline and canine platelet glycoproteins by immuno- and lectin histochemistry

    • Jarig Darbès
    • Florian Colbatzky
    • Walter Hermanns

    Originals Pages: 83 - 91

11. Announcements

    Announcement Pages: 92 - 92