NCI: Serous gland with distended lumen. It includes the gland of Krause in the lacrimal sac and the gland of Wolfring on the inner surface of the upper eyelid.,NCI: Serous gland with distended lumen. It includes the gland of Krause in the lacrimal sac and the gland of Wolfring on the inner surface of the upper eyelid. (NCI)
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