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. 2021 Jul 9;10(7):bio058524. doi: 10.1242/bio.058524

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© 2021. Published by The Company of Biologists Ltd

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Fig. 3. — Stereomicroscope observations of O. jantseanus in different conditions. (A) Relaxed state. The trachelosome (tr) mostly retracts into the urosome (ur), only showing the eye part. (B) Motion state. Eleven pairs of branched gills (gi) are found on both sides of the leech and an anterior sucker (as) and posterior sucker (ps) are observed. (C) Frozen, hydrated state. (D) Dry, dehydrated state. A transparent glass-like substance could be seen on the surface of the leech body. (E) Dorsal view of the ethanol dehydration state. (F) Ventral view of the ethanol dehydration state. The contracted anterior sucker (as) and posterior sucker (ps) are visible. (C–F) Formation of the hemispherical state. Scale bars: A, 2000 µm; B–F, 1000 µm.