Figure 1
From: Early endothelial dysfunction in cholesterol-fed rabbits: a non-invasive in vivo ultrasound study.

In vivo assessment of endothelial function in rabbits. Rabbits under sedation were serially infused for two minutes in the marginal ear (A) vein with the vehicle. An ink mark (Panel B) was made on the rabbit abdomen for probe location for each exam. Images (Panels C and D) of the abdominal aorta were recorded throughout the procedure.