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Fig. 4 | Frontiers in Zoology

Fig. 4

From: Does the frontal sensory organ in adults of the hoplonemertean Quasitetrastemma stimpsoni originate from the larval apical organ?

Fig. 4

Transmission electron micrographs of epidermis in 2 d post-fertilization (dpf) larvae of Quasitetrastemma stimpsoni. a Central region of apical plate cells. b The cilia rootlets of apical plate cells. c Ciliary rootlets of cell of definitive epidermis. d The nuclei (asterisks) of mucoid cells. e The nucleus (asterisk) of a bacillary cell. f Extensions of bacillary (black asterisks) and granular (white asterisk) secretory cells. Abbreviations: ar–axial rootlet; hr–horizontal rootlet; ga–Golgi apparatus

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Frontiers in Zoology

ISSN: 1742-9994