Figure 2 in Proboscis sensory cells in Nemertea: comparative morphology and phylogenetic implications

Figure 2. Light micrographs of the everted proboscis of live nemerteans. А, Cephalothrix simula, everted proboscis with bristles formed by the receptor processes of sensory cells. B, C. simula, the receptor process of a sensory cell. C, Cephalothrix sp., everted proboscis with bristles formed by the receptor processes of sensory cells. D, Kulikovia alborostrata, the apical surface of the proboscis epithelium showing pseudocnidae (white arrowheads) and monociliated sensory cells (black arrowheads).