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Main clinical signs exhibited by Argopecten purpuratus larvae infected with V. tubiashii VPAP30 after 24 h of exposure. (A) Bacterial swarms of bacteria on the margins of the larvae, (B) velum disruption, (C) detachment of ciliary cells of the velum (black arrows), and (D) necrosis of digestive tissue of scallop larvae stained with trypan blue. Scale bars: 30 μm.
