Fig. 8
From: The development of the oviducal gland in the Rajid thornback ray, Raja clavata
Sperm observed inside the oviducal gland. H&E. a Sperm bundles inside the tubules of the baffle zone deep in the oviducal gland, in the late developing stage. b Detail of the tubules containing sperm in the deep recesses of the baffle zone in the late developing stage. c Non-aggregated individual sperm inside the secretory ducts of the baffle zone in spawning capable females. d Detail of the secretory duct containing sperm, in the spawning capable stage. ML muscle layer, BV blood vessel, S sperm, ST secretory tubules, L lumen, CT connective tissue, SD secretory duct, BP basal plate, PP plateau projection