part_of Gene's organ epithelial sac adult Gene's organ epithelial sac lumen Fig. 1-EAA, Fig. 3-EAA, in Exp. Appl. Acarol. 25: 327-352. TADS:0000378 TADS:0000378 The lumen between the epithelium of the epithelial sac and the cuticular sac. This is the lumen into which the secretions of the accessory glands accumulate and presumably migrate into the corpus and horns when the gland is everted to wax the eggs (Schol et al. 2001). default_namespace anatomical space