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. 2023 Mar 14;11(2):e04799-22. doi: 10.1128/spectrum.04799-22

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Copyright © 2023 Cheng et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

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FIG 1 — Size, weight, and histological structure of the bursa of Fabricius (BF) at different ages. (A) Size of the BF from days 1 to 154. (B) Weight of the BF from days 1 to 154. (C) Ratio of the BF to the body weight from days 1 to 154. Data are means ± standard errors of the means (SEM) (n = 6). (D to J) BF on day 1 (D1) (D), day 9 (E), day 49 (F), day 70 (G), day 112 (H), day 140 (I), and day 154 (J). LN, bursa lymph nodule; EM, epithelium mucosa; ML, muscular layer; AD, tunica adventitia; M, medulla; C, codex of the lymphoid follicle; TR, trabecula (n = 6).