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The zebrafish pineal gland. Transgenic zebrafish expressing enhanced green fluorescent protein (EGFP) in the pineal gland under the control of the pineal-specific aanat2 promoter [21]. (a) The head region of an adult zebrafish, dorsal view, anterior to the top. (b) The head region of a 72 hpf zebrafish larva, lateral view, anterior to the left.
