Skip to main content
Fig. 10 | BMC Evolutionary Biology

Fig. 10

From: Morphology of the bryozoan Cinctipora elegans (Cyclostomata, Cinctiporidae) with first data on its sexual reproduction and the cyclostome neuro-muscular system

Fig. 10

Oocytes in Cinctipora elegans. Semithin sections, toluidine blue. a Longitudinal section showing an oocyte embedded within the vacuolated pharyngeal epithelium. b Detail of early stages of oogenesis with two early oocytes with almost no yolk and nuclei with nucleoli occupying the largest part of the cell. c Detail of an oocyte in the pharyngeal wall showing the cytoplasm filled with yolk. d Oocyte doublet in the ‘mucus’-filled pharynx lumen. Note also the round cell (presumably oogonium) at the basal side of the pharyngeal epithelium (arrow). Also, some of the vacuolated cells of the pharynx contain granules similar to the ones in the oocytes. Abbreviations: eo – early oocyte, int – intestine, oc – oocyte, ph – pharynx, pl – pharynx lumen, py – pylorus

Back to article page