Figure 1. A: Section showing connective/storage tissues from a flat oyster, Ostrea edulis from Langestrand near Arendal, june 2009. Numerous haemocytes are present in the tissue. An un-identified cell is marked with an arrow. B: Same tissue area in a reference section from a flat oyster infected with Bonamia ostreae , provided by EURL. Several B. ostreae are visible (arrows), both freely and inside haemocytes. Both images have the same magnification.
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