Figure 8 in Proboscis sensory cells in Nemertea: comparative morphology and phylogenetic implications

Figure 8. Transmission electron micrographs of proboscidial monociliated sensory cells of pilidiophoran species. A, Kulikovia alborostrata, transverse section of the receptor process of a sensory cell. B, K. alborostrata, longitudinal section of the globular ciliary tip of a sensory cell. C, K. alborostrata, high magnification of a longitudinal section of the distal region of the dendrite showing the ciliary basal body (white arrowhead) with one stout axial rootlet (black arrowhead) associated with microtubules (black arrows). D, K. alborostrata, longitudinal section of a sensory cell. The filament bundles (white arrowhead) of the microvilli are anchored on the inner surface of the apical cylinder (black arrowhead). E, Lineus sanguineus, longitudinal section through a group of sensory cells. A high-magnification inset shows the globular ciliary tip of a sensory cell. F, L. sanguineus, transverse section of the receptor process of a sensory cell. G, L. sanguineus, longitudinal section of the receptor process of a sensory cell. The filament bundles (white arrowhead) of the microvilli are anchored on