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. 2015 May 27;5:46. doi: 10.3389/fcimb.2015.00046

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Copyright © 2015 Chandrashekhar, Gangaiah, Pina-Mimbela, Kassem, Jeon and Rajashekara.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Colonization of the Δtlp mutants in chickens. Three day-old chicks (n = 6/group) were inoculated orally with 10⁴ CFU of the C. jejuni WT and Δtlp6, 8, 9, and 10 mutants. Seven days post-inoculation, the ceca, duodenum, jejunum, liver, spleen, and bursa were collected, homogenized, and 100 μL of serially diluted homogenates were spread onto MH agar containing Campylobacter selective supplement. (A) The Δtlp10 mutant exhibited a significant defect in colonization of the cecum. (B) The Δtlp8 and 10 mutants exhibited a colonization defect in the duodenum. (C) The Δtlp6, 8, and 10 mutants showed a decreased colonization in the jejunum. (D) The Δtlp9 mutant exhibited an increased colonization of the bursa. Each data point represents CFU/g of tissue, ^*P < 0.05, ^**P ≤ 0.01. Dotted line represents the detection limit. The horizontal bars represent the arithmetic mean values for CFU.