Lymphocyte proliferation in lymphoid organs of the dromedary camel using the monoclonal antibody MIB-5 against the proliferation-associated nuclear epitope Ki-67 |
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| Authors: | Zidan M Pabst R |
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| Institution: | Department of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany. |
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| Abstract: | Detection of proliferating lymphocytes is useful for studying immune reactions and for the prognosis of tumours of lymphocyte origin. Markers detecting proliferating cells are lacking in the dromedary camel. This study deals with the immunohistochemical detection of the Ki-67 proliferation-associated nuclear epitope using MIB-5 in frozen sections from spleens, different lymph nodes and haemal nodes of eight camels (0.5-12 years old). Frozen sections from rat spleens were labelled in parallel with camel tissue as a positive control. Large numbers of cells expressing the Ki-67 epitope were localized in germinal centres of all lymphoid organs tested. A few cells were found in the periarterial lymphoid sheath and the red pulp of the spleen, also in the lymphatic cords of the lymph nodes and the haemal nodes. There were no obvious differences in respect to the age of the animals. The Ki-67 epitope is well expressed by proliferating cells in camel lymphoid organs. MIB-5 can be applied to identify this epitope and will be a useful marker for cell production in immune reactions. |
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