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Gene/Clone	Species	Stage	Anatomy Item	Experimenter
per2	xenopus		otic vesicle [+] amphibian papilla,anterior crista,auditory hair cell,auditory ossicle,auditory tube,basilar papilla,endolymphatic duct,footplate of the stapes,inner ear,lagena,lateral crista,middle ear,osseous labyrinth,otic capsule,oval window,pars externa of the stapes,pars interna of the stapes,pars media of the stapes,posterior crista,prootic bone,saccular macula,semicircular canal,stapes,tympanic annulus,tympanic disk,vestibular apparatus,vestibule,auditory apparatus,otic capsule

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Experiment details for per2

Circadian genes are expressed during early development in Xenopus laevis.

Circadian genes are expressed during early development in Xenopus laevis.

Gene	Clone	Species	Stages	Anatomy
per2.L		laevis	NF stage 27 to NF stage 28	otic vesicle
per2.L		laevis	NF stage 35 and 36	otic vesicle

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Figure 3. xPer2 is expressed from neural plate to late tailbud stages. Shown are in situ hybridization results depicting expression of xPer2 mRNA. Panels A, B, D, and F show a dorsal view of each embryo. Panels C and E show side views. All embryos are oriented with the anterior to the left. G show transverse sections and J shows a sagittal section of late tailbud stage embryos. Sections shown in G, H, and J are oriented with the dorsal side at the top right of the panel. Neural plate staining is shown in panel A (stage 16) and B (stage 18). C and D depict early tailbud embryos with continued expression in the CNS as well as in the eye (black arrow), otic vesicle (black arrowhead), cement gland (blue arrow) and somites (red arrowheads). In late tailbud embryos (E and F), xPer2 is expressed in the otic vesicle (E,I, black arrowhead), pineal (F,G, orange arrowhead), brain, retina, lens (G), and olfactory pit (I, green arrowhead), although cement gland staining was lost (E, blue arrow). xPer2 was also present at low levels in the heart (H, blue arrowhead) and notochord (J, orange arrow). J also shows somite staining (red arrowheads).

Gene	Clone	Species	Stages	Anatomy
per2.L		laevis	NF stage 27 to NF stage 28	otic vesicle

per2 (period circadian clock 2) gene expression in Xenopus laevis embryo, assayed via in situ hybridization, NF stage 27, lateral view, anterior left, dorsal up.

Gene	Clone	Species	Stages	Anatomy
per2.L		laevis	NF stage 27 to NF stage 28	otic vesicle

per2 (period circadian clock 2) gene expression in Xenopus laevis embryo, assayed via in situ hybridization, NF stage 27, dorsal view, anterior left.

Gene	Clone	Species	Stages	Anatomy
per2.L		laevis	NF stage 35 and 36	otic vesicle

per2 (period circadian clock 2) gene expression in Xenopus laevis embryo, assayed via in situ hybridization, NF stage 35&36, dorsal view, anterior left.

Gene	Clone	Species	Stages	Anatomy
per2.L		laevis	NF stage 35 and 36	otic vesicle

per2 (period circadian clock 2) gene expression in Xenopus laevis embryo, assayed via in situ hybridization, NF stage 35&36, lateral view, anterior left, dorsal up.