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Fig. 7 | Frontiers in Zoology

Fig. 7

From: Evidence for cell turnover as the mechanism responsible for the transport of embryos towards the vagina in viviparous onychophorans (velvet worms)

Fig. 7

Apoptosis in the genital tract of E. rowelli. Nuclei of TUNEL-positive cells are marked in orange, nuclei stained with DAPI are represented in gray. Proximal is up in all images. a Overview of a complete genital tract. b Detail of the ovary containing oocytes of different sizes. Arrowheads point to apoptotic cells in an empty stalk. c Detail of the common duct/vagina. Abbreviations: cd, common duct/vagina; d, distal; oc, oocyte; ov, ovary; p, proximal; sr, seminal receptacle; ut, uterus. Scale bars: A: 1 mm; B, C: 200 μm

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Frontiers in Zoology

ISSN: 1742-9994