Contribution à l'étude de virus de mollusques marins apparentés ...

Figure 4 : Toluidine blue stained semi tbin sections of Pacific oyster larvae. Animais from
parents originating from Arcachon, La Tremblade and Marennes held at 22-23°C or 25-26°C
exhibited nuclear lesions. Arrows : Condensed, hyperhasopbilic nuclei. Arrowheads :
Enlarged nuclei presenting marginalisation of chromatin.
,"
' \
\ -' ..... çA .:.;" ..
"
Figure 9 : Transmission electron micrograph of nuclear alterations ohserved in larvae held al
22-23°C. The nucleus appeared very electron dense, but with sorne roud clearer areas. Bar :
200nm.
114
(