Extended Data Fig. 1: Structure of the avian pecten oculi and reptilian conus papillaris.
From: Oxygen-free metabolism in the bird inner retina supported by the pecten
a, transversal virtual slices and maximum intensity projections (MIP) of diffusible iodine-based contrast-enhanced micro-CT images showing the pecten oculi of the avian zebrafinch (Taeniopygia guttata) (left, n = 1) and the conus papillaris of reptilian green anole (Anolis carolinensis) (right, n = 1). While the pecten oculi presents as a feather-like structure with a large surface area, the conus papillaris is a smaller cone-like structure. b, model of the arterial blood supply to the pecten oculi in the zebra finch from vascular casting followed by micro-CT imaging. The arterial blood supply to the pecten oculi derives from the ophthalmotemporal artery originating in the rete opthalmicum, which is ultimately supplied by the common carotid artery. The fully interactive model (rotate, pan, zoom, toggle layers, adjust transparency) is provided separately as Supplementary 3D Model 1 (3D PDF).
