Results 171 to 180 of about 11,770 (213)
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Vasculogenesis of the bursa cloacalis (bursa of Fabricius) of the chick embryo
Journal of Morphology, 1981AbstractVasculogenesis of the bursa cloacalis (bursa of Fabricius) was examined in 10‐ to 21‐day chick embryos and in chicks during the first 5 days post‐hatching. The entire circulatory system was injected with India ink, and the bursae were then removed and either cleared for examination in toto or sectioned serially.
G C, Schoenwolf +2 more
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Histomoniasis in the Bursa of Fabricius of Chickens
Avian Diseases, 2004Histomoniasis was diagnosed in a flock of 6-wk-old commercial chickens. Clinical signs included depression, stilted gait, inappetence, and a slight increase in mortality. At necropsy, there were pale-yellow to dark-gray circular and depressed necrotic lesions in the liver. The ceca were enlarged and impacted with caseous cores.
Portia L, Cortes +4 more
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Ontogenic restriction of colonization of the bursa of Fabricius
European Journal of Immunology, 1983AbstractThe capacity of hemopoietic precursor cells (HPC) to home to embryonic bursal and thymic grafts was investigated in embryonic and newly hatched chickens. Whereas thymic grafts developed normal histogenesis in both types of recipients, the bursal rudiment was colonized and developed in embryonic, but not in newly hatched hosts.
E, Houssaint, A, Toraño, J, Ivanyi
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Epithelium of the Bursa of Fabricius Mucosa
Anatomia, Histologia, Embryologia, 2005The structure and topography of the Bursa of Fabricius (BF) differs from other central immune organs. Structural components, providing BF function are located in mucosa, which is constantly influenced by antigen stimulation. Therefore the reports, which have appeared recently, indicate that BF may function as a peripheral immune organ.
V. Khomych +3 more
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In vitro organ culture of embryonic bursa of fabricius
Developmental & Comparative Immunology, 1990An in vitro method for organ culture of embryonic bursa of Fabricius is presented. It is shown that bursa cells proliferate in in vitro culture as evidenced by [3H]-thymidine incorporation. We assessed the expression of B-cell alloantigen (Bu-la and Bu-lb), class I (B-F) and class II (B-L) antigens of chicken major histocompatibility complex (MHC), and
J S, Nowak, O, Vainio, O, Lassila
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Bursa of Fabricius, a Source of Bluecomb Infectious Agent
Avian Diseases, 1972SUMMARY Cell-free filtrates were prepared from bursae of Fabricius collected from bluecomb-infected turkey poults. Such filtrates were found uniformly infective when administered orally to bluecomb- susceptible poults under 7 days old. Evidence is presented that the bursa is a more satisfactory source of bluecomb agent for laboratory study than is the ...
S A, Nagi, B, Panigrahy, C F, Hall
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Follicular exclusion of retroviruses in the bursa of fabricius
Virology, 1989To gain insight into the regulation of retroviral infection at the cellular level, we analyzed the distribution of retroviral antigen and nucleic acid in the bursa of Fabricius of the parents and progeny of two highly inbred lines of chickens, one resistant and the other susceptible to infection. Line 15I5 chickens and line 7(2), which are C/C and C/A,
D L, Ewert, N, Avdalovic, C, Goldstein
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Antiserum Specific for Reticulin of the Bursa of Fabricius
International Archives of Allergy and Immunology, 1976Antiserum produced by immunizing rabbits with embryonic chicken spleen cells showed, after appropriate absorption with cell suspensions, specificity for fetal spleen cells in membrane immunofluoresoence tests. However, when the original antiserum was absorbed with tissue homogenates and tested on cryostat tissue sections, it reacted specifically with ...
R L, Boyd, H A, Ward, H K, Muller
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The Bursa of Fabricius and Immunoglobulin synthesis
1977Publisher Summary This chapter discusses the Bursa of Fabricius and immunoglobulin synthesis. It emphasizes on bursa morphology, bursa kinetics, and bursa regulation of immunoglobulin production synthesis. Scanning electron microscope and transmission electron microscopy have revealed two distinct types of epithelial cells covering the plicae of the ...
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2015
Student and successor of Andreas Vesalius (Fig. 3.1) and Gabriel Fallopius (Fig. 3.2), Girolamo Fabrici or Fabrizio (Fig. 3.3), was professor of Surgery at the University of Padova, Italy, from 1565 to 1613, and practiced and taught Anatomy (Smith et al. 2004). In 1594, he built the first permanent theatre ever designed for public anatomical dissection
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Student and successor of Andreas Vesalius (Fig. 3.1) and Gabriel Fallopius (Fig. 3.2), Girolamo Fabrici or Fabrizio (Fig. 3.3), was professor of Surgery at the University of Padova, Italy, from 1565 to 1613, and practiced and taught Anatomy (Smith et al. 2004). In 1594, he built the first permanent theatre ever designed for public anatomical dissection
openaire +1 more source