Fig. 3
From: Life in a tube: morphology of the ctenostome bryozoan Hypophorella expansa
Gonads of Hypophorella expansa. Autofluorescence and cell nuclei staining. Confocal laser scanning microscopy (CLSM). a Overview of an autozooid attached to a stolon showing the laterally placed ovary with several oocytes. b Detail of an ovary showing nuclei with nucleoli surrounded by yolk granules in each oocyte. c Zooid showing laterally situated spermatogenic tissue. Abbreviations: apa – apertural area, cae – caecum, fg – foregut, gwa – gnawing apparatus, lb. – lophophoral base, ov – ovary, sbo – space balloon, sc – stolon capsule, spg – spermatogenic tissue, st – stolon, sw –stolonal wrinkles