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. 2024 Feb 18;13(4):356. doi: 10.3390/cells13040356

Figure 2.

Figure 2

Male acanthocephalan Centrorhynchus globocaudatus. (A) Longitudinal section of the posterior end shows inverted copulatory bursa and juxtaposition of Saefftigen’s pouch (arrow) and campanulate part of the bursa (arrowheads). Note the opening of the bursa (curved arrow). Alcian Blue/PAS staining; scale bar, 50 µm. (B) Close contact between pouch (arrow) and bursa (arrowheads); opening of the bursa is evident (curved arrow). Alcian Blue/PAS staining; scale bar, 50 µm (C). Micrograph shows posterior end of male with fully everted bursa (arrowheads), spongy aspect of pouch (arrow), and contact of pouch’s stalk (thick arrow) and campanulate part of bursa. Alcian Blue/PAS staining; scale bar, 200 µm. (D) Semi-thin section of terminal part of male body with inverted bursa (arrowheads) and opening of the bursa (curved arrow). Toluidine blue staining; scale bar, 100 µm.