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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / The localization and expression of HNK-1-immunoreactive molecules in chicken embryos

CY Bao, XS Li, WM Peng, and MX Zuo (2003)

The localization and expression of HNK-1-immunoreactive molecules in chicken embryos


HNK-1 (Leu-7 antigen) is a unique carbohydrate moiety bound to the subsets of a number of cells and extracellular matrix glycolipids and glycoproteins, acting as an adhesive. Using immunohistochemistry and Western immunoblot method, we observed the localization and expression of the HNK-1 epitope in chicken embryos at different developmental stages. The results of immunohistochemistry show that HNK-1-immunoreactivity (HNK-1-IR) is distributed extensively in different tissues, and the intensity of immunoreaction varies with the development stages in chicken embryos. In the nervous system, the HNK-1-IR decreases gradually in brain but remains almost stable in spinal cord with embryo development, and it is strong in the neural tube and the neural crest at stage 11. At later stages, all forming ganglia are labeled. The special conductive tissues of the heart are also recognized by the HNK-1 antibody. In the alimentary tube, HNK-1-IR mainly appears in the Auerbach plexus, the Meissner plexus, and the mucosal membrane. Endothelial cells, pit cells and/or fat-storing cells may contribute to the HNK-1-IR of the liver. The results of Western blot show that there are at least three kinds of HNK-1-reactive molecules expressed in different tissues of different stages, and the kinds of these molecules remain relatively identical with developmental stages. Our results from chicken embryos demonstrate that HNK-1 epitope is expressed widely in the entire embryonic period, and the distribution of HNK-1-positive molecules shows histological specificity.

HNK-1-immunoreactivity; development; epitope; chicken embryo; immunohistochemistry; Western immunoblot
  • ISSN: 0777-6276

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium


Annales de la Société malacologique de Belgique
​Annales de la Société royale malacologique et zoologique de Belgique
Annales de la Société Royale Zoologique de Belgique
Belgian Journal of Zoology