Fig. 6 in Echinococcus multilocularis (Cestoda, Cyclophyllidea, Taeniidae): origin, differentiation and functional ultrastructure of the oncospheral tegument and hook region membrane

Fig. 6 TEM micrographs of mature eggs of Echinococcus multilocularis. a Part of the oncosphere showing the high concentration of beta-glycogen particles (β-gl) in the musculature of oncospheral hooks (HM) as indicated by the cytochemical test of Thiéry. b Low-power electron micrograph illustrating the general topography of mature intrauterine egg. Note: (1) a bilateral symmetry of the oncosphere (white interrupted line) and (2) position of hook region membrane and oncospheral tegument at one pole of the hexacanth. The hook region is marked by a frame composed of interrupted black lines. EmB embryophoric blocks, GC germinative cells, GL granular layer, HRM hook region membrane, IE inner envelope, LH lateral hooks, MH median hooks, OE outer envelope, OM oncospheral membrane, PG penetration glands, SC somatic cells