Synopsis
Alkaline phosphatase activity in lymphatic tissues of guineapig, cat, cow, dog, rabbit, sheep, rat, mouse, hamster, chicken and man was studied with histochemical, biochemical and electrophoretic techniques. The thymus showed decreasing alkaline phosphatase activity from species to species in the order just given. Activity of alkaline phosphatase in other lymphatic tissues did not show such clear species and organ dependence. Spleens of the cat, cow and rabbit and lymph nodes of the cow and sheep gave, however, very characteristic patterns of alkaline phosphatase activity. In the chicken there was no difference between the alkaline phosphatase content of the thymus and that of the bursa of Fabricius. The lymphatic follicles of human tonsils and appendix and in the appendix of the rabbit exhibited alkaline phosphatase activity in the circular cell layer. This was also seen in some follicles in the lymph nodes of certain species. Electrophoretically, the main alkaline phosphatase fraction of the lymphatic tissues closely resembled the main fraction of blood, though it is probably not identical with it. Although the biological function of alkaline phosphatase is unknown, the greatly varying alkaline phosphatase content in different lymphatic organs of different species indicates that immunological studies with one species or with cells derived from a certain lymphatic tissue or with both are probably not directly comparable with studies using other species or cells from other lymphatic tissues.
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Kouvalainen, K. Species and organ dependence of alkaline phosphatase activity in lymphatic tissues. A histochemical, biochemical and electrophoretic study. Histochem J 3, 55–69 (1971). https://doi.org/10.1007/BF01686507
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DOI: https://doi.org/10.1007/BF01686507