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Figure 1


Fig. 1. The cement gland, as it appears in a living cyprid under differential interference contrast (DIC) optics. The individual granules can be seen as bumps on the cement gland surface. At the apical end, the cement duct, which widens to form the muscular sac, can be seen. CG, cement gland; CD, cement duct; MS, muscular sac; CE, compound eye.