Modern Imaging Techniques to Reveal Animal Anatomy Figure 4. mCT and CT of contrast agent filled vasculatures. mCT (a) and CT (b, c, e) representations of contrast agent filled vasculature. (a): Ventral view of the head region of a Vietnamese rice field eel (Monopterus albus) with contrast agent filled vascular beds. (b): Ventral view of South American cane toad (Rhinella marina) with lung arteries outlined. (c): Lungs of the South American cane toad (Rhinella marina) digitally isolated. (d): Ventrolateral view of the vasculature in a yellow anaconda (Eunectes notaeus). doi:10.1371/journal.pone.0017879.g004 PLoS ONE | www.plosone.org 7 March 2011 | Volume 6 | Issue 3 | e17879