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. 2023 Oct 10;14(1):2268496. doi: 10.1080/21505594.2023.2268496

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© 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.

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Figure 5. — Histological analysis of G. mellonella larvae infected with sera-pre-treated Brucella strain A19. Groups of larvae were infected with 1.25 × 10⁸ CFU of live Brucella strain A19 pre-treated with 104M sera or PBS sera for 1 hour. a) Larvae infected with PBS sera pre-treated bacteria on day 1, H&E staining. Black triangles represented disseminated Brucella. b) Larvae infected with PBS sera pre-treated bacteria on day 1, Koster’s staining. c) Larvae infected with 104M sera pre-treated bacteria on day 1, H&E staining. d) Larvae infected with 104M sera pre-treated bacteria on day 1, Koster’s staining. e) Larvae infected with 104M sera pre-treated bacteria on day 5, H&E staining. f) Larvae infected with 104M sera pre-treated bacteria on day 5, Koster’s staining. Black arrows represented the granuloma-like structures formed by the aggregation of haemocytes.