Transfer of carbonic anhydrase-positive particles from the follicle-associated epithelium to lymphocytes of Peyer's patches in foetal sheep and lambs

Cell and Tissue Research
Thor LandsverkL Nicander

Abstract

Carbonic anhydrase cytochemistry of the ileal Peyer's patch in foetal and neonatal lambs has indicated secretion from the follicle-associated epithelium to the follicles. Reaction for carbonic anhydrase in the follicle-associated epithelium was found in the luminal plasma membrane, in cytoplasmic vesicles, and in vacuoles containing 50-nm membrane-bounded particles that seemed to be shed to the intercellular space. The lateral plasma membrane was negative for carbonic anhydrase, indicating that formation of carbonic anhydrase-positive particles was restricted to vacuoles. Administration of ferritin to ileal loops of sheep foetuses showed ferritin localized in vesicles and vacuoles of the follicle-associated epithelium followed by exocytosis, together with carbonic anhydrase-positive particles, into the indentations of the lateral cell border. The carbonic anhydrase-positive particles seemed to be transported to the centres of lymphoid follicles where many were attached to the plasma membrane of lymphocytes. Carbonic anhydrase-positive particles were also seen in vesicles and sometimes free in the cytoplasm of the lymphocytes or attached to their nuclear envelope. Light microscopically, carbonic anhydrase reactivity of the folli...Continue Reading

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Citations

Jul 1, 1991·The American Journal of Anatomy·L NicanderT Landsverk
Mar 1, 1992·Developmental and Comparative Immunology·C M PressT Landsverk
Jan 1, 1996·Immunology Today·P J Griebel, W R Hein
Jan 1, 1997·International Reviews of Immunology·J Reynolds
May 18, 2004·Anatomia, histologia, embryologia·F Beyaz, R N Aşti
Apr 19, 2016·Immunological Reviews·Andrea Reboldi, Jason G Cyster
Apr 1, 1994·Zentralblatt für Veterinärmedizin. Reihe B. Journal of veterinary medicine. Series B·E M LieblerT Landsverk
Jan 5, 2002·Clinical and Diagnostic Laboratory Immunology·Mona AleksandersenThor Landsverk
Mar 15, 2002·European Journal of Cell Biology·Philippe CollasThor Landsverk

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