Titlebook: Microenvironments in the Lymphoid System; G. G. B. Klaus Book 1985 The Editor(s) (if applicable) and The Author(s), under exclusive licens

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Effect of Early Embryonic Bursectomy on Lymphocyte Differentiation and Maturationium of the bursa was removed from the embryo between 54 and 60 hr of development. Such early embryonically bursectomized chickens have been reported to develop B cells as well as serum immunoglobulins (Ig) (1–7). However, some controversy exists over the ability of these early embryonically bursecto

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Evidence for the Existence of Two Distinct Types of Peyer’s Patches in Sheepaccount of the “intestinal glands” that are found in all higher vertebrates. The inclusion of sheep in the list of species in which he noted PP was probably as a consequence of one of his other studies on the mechanisms of rumination. The PP in sheep have received attention periodically since that t

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Evidence of Differences Between Peyer’s Patches and Germinal Centers5 (cited by Schmidt, 1959), there have been changing views on the function of these lymphoid tissues found along the intestinal tract. The first detailed study by Peyer (1677) led to the concept, which survived for almost 2 centuries, that PP were involved in mucous secretion. The attention of the m

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