Figure 2

Representative photomicrographs demonstrating lesions in ovary (A–D) and testis (E–H) of zebrafish exposed to MC-LR for 30 d. (A–D) H.E-stained ovary section. Control (A); 1 μg/L exposure (B): the vacuolation of the gonadosomatic tissue (star), widened intercellular space of the oocyte (black arrow); 5 μg/L exposure (C): the vacuolation of the gonadosomatic tissue (star), loss of contact between the oocyte cell membranes and the follicular cell layer (white arrow); 20 μg/L exposure (D): widened intercellular space of the oocyte (black arrow), loss of contact between the oocyte cell membranes and the follicular cell layer (white arrow). (E–H) H.E-stained testis section. Control (E); 1 μg/L exposure (F): optically empty intercellular spaces (black arrow); 5 μg/L exposure (G): optically empty intercellular spaces (black arrow), cellular deteriorations (star); 20 μg/L exposure (H): the same lesions as described in 5 μg/L exposure.