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Soft X-ray dissected Drosophila CNS in three orthogonal planes, xy, yz, and xz. xy: frontal slice of the entire CNS, including the VNC. yz sagittal plane. xz transverse plane. Different zones in the surrounding BSA reveal successive additions of the cross-linked protein. E, esophagus; L, lamina; M, muscle; R, retina; PV, proventriculus. Scale bar in xy: 200 μm.
