Fig. 2 in Echinococcus multilocularis (Cestoda, Cyclophyllidea, Taeniidae): origin, differentiation and functional ultrastructure of the oncospheral tegument and hook region membrane

Fig. 2 Schematic diagram illustrating the general topography of the oncospheral tegument and hook region membrane in relation to the oncospheral hooks, penetration gland arms and glandular exits in the mature intrauterine eggs. All structures involved in formation of the oncospheral tegument and hook region membrane are marked in orange colour. BSP binucleate subtegumental perikaryon, HRM hook region membrane, IE inner envelope LH lateral hooks, MH median hooks, Mv microvilli, N1, N2 nucleus, OT oncospheral tegument, PGA penetration glands arms