Fig. 6

Epidermal glands in Lobatocerebrum riegeri n. sp. as seen with CLSM and TEM. DAPI in cyan, acetylated α-tubulin in glow. b, d–e, g are maximum intensity projections of a subset of the original image stack on various locations of the body, c, f, h ultrastructural details of the epidermis. a Schematic cross section drawing of the epidermis with all three glandular cell types in their approximate abundance, b ciliated gland cell with closed circle of shortened cilia (inset with details of the tubular strands in the cellular membrane), c Sagittal section of a ciliated gland cell, d Tubular gland cell in the epidermis, e Tubular gland cell with long projection in the epidermis, f Sagittal section through the epidermis of the rostrum, presenting a tubular epidermal gland adjacent to a duct of the posterior frontal gland and the brain, g Kidney-shaped glands in the epidermis (inset with details of the glandular opening), h Cross section through a kidney-shaped gland. Abbreviations: afg; anterior frontal gland; bl: basal lamina, brc: brain cell, c: cilium, cg: ciliated gland cell, dfg: duct of the frontal gland, go: glandular opening, gv: glandular vesicle, ksg: kidney-shaped gland cell, lm: longitudinal muscle, n: nucleus, ne: nucleus of epidermal cell, pcg: projection of the ciliated gland cell, pfg: posterior frontal gland, pln: peripheral longitudinal nerve, ptg: projection of the tubular gland cell, rsg: rod-shaped granule, sc: shortened cilium, ssn: sickle-shaped nucleus, tg: tubular gland cell, tmr: transverse muscular ring complex, ts: tubulinergic sheath, tst: tubulinergic strand