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. 2021 Mar 30;4:433. doi: 10.1038/s42003-021-01935-3

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© The Author(s) 2021

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Fig. 2 — a Sagittal slice showing the right SC (red) curved around the calcarine fissure. b Coronal slice showing the left and right SC. c, d The two layers of the SC. The deeper and longer layer (orange) lies under the more superficial and u-shaped layer (red). Where they intersect is shown in bright yellow.