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. 2020 Dec 1;120(1):209–221. doi: 10.1007/s00436-020-06968-x

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Ultrastructural analysis of surface modifications in adult male and female S. mansoni after incubation in human serum. a Scanning electron microscopy (SEM; 2500x) with details of tegument structure (10,000×) and b transmission electron microscopy (TEM; 7100×) of the medial posterior portion of adult male (male_single, male_pair) and female (female_single, female_pair) S. mansoni after 0.5-h incubation in NHS and NHSi. Presence of tegumental ridges (R), tubercles (TU), spines (S), sensory papillae (SP), blebs (B), circular musculature (CM), longitudinal musculature (LM), cytoplasmic bridge (CB), membranous body (MB), vesicles (V), and pits of the outer surface (arrows) are indicated. Representative pictures out of five adult worms per group. Conspicuous areas as a result of NHS treatment encircled in green