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Light micrograph images showing the transverse sections of a gill filament of L. fortunei exposed to NaDCC. (A) Control group. (B) Group 24 h after conditional exposure. (C) Group 48 h after conditional exposure. (D) Group 72 h after conditional exposure (presumably they were dead, as their valves were open). Cilia (c), haemolymph vessel (hv), epithelium lifting (*) and epithelial desquamation (arrow head).
