2000) found the granulocytes of Ostrea edulis contained only numerous basophilic or refringent
cytoplasmic granules, in agreement with our study on the staining characteristic of C.
Hymenium thickening; basidia 23-28 X 6-7 [micro]m, clavate, clamped, yellowish and somewhat refringent
under phase contrast; contents homogeneous or with minute granules or guttules, especially proximally; sterigmata 4, slender, more or less straight.
In both autozooid and siphonozooid polyps, photocytes are clustered in specific locations of the endodermal layer where cells filled with highly refringent
granules (presumably acting as diffuse reflectors for the light emission) predominate (Anctil et al.
The cells showed an apparent increase in size, diffuse cell rounding, and a refringent
aspect (Figure 1B).