Rat kidney injected with Microfil through via the artery (left) and rabbit kidney injected with Microfil through the vein (right).
Although they concern two different species, these two pictures illustrate well the difference of the vascularization of the OS and IS.
L. Bankir, N. Bouby, MM Trinh-Trang-Tan.
In Water and salt homeostasis in health and disease (PH Baylis Editor). Baillière Tindall, 1989, pp 249-311