Figure 1
Early developmental stages of Buddenbrockia sp. 1 in Fredericella sultana. (A) Light micrograph showing spherical stages (arrowheads) attached to gut dissected from host. (B) Histological section of gut showing early preworm stages underneath peritoneum and spherical stage (arrowhead) that has penetrated through the peritoneum. (C) and (D) Transmission electron microscopy micrographs showing detail of the section shown in (B) as indicated by rectangles. Preworm stages reside underneath the peritoneum but on top of the basal lamina. (E) Confocal micrograph, optical section through early bilayered spherical stage attached to gut. F-actin (green); nuclei (red); ecm, extracellular matrix; ep, epidermis; gu, bryozoan gut; pe, bryozoan peritoneum; pw, preworm stage; ic, inner cells.