Figure 2 | Scientific Reports

Figure 2

From: The optimized jugular vein catheterization reinforced cocaine self-administration addictive model for adult male Sprague–Dawley rats

Figure 2

Several details of optimized jugular vein catheterization procedure. (A) The jugular vein catheter was inserted into the neck incision from the back incision through the subcutaneous tunnel. (B) Adjust and fix the S-shaped positioning nail. (C) Cut the silicone tube and trim into the shape of a fish mouth. (D) A syringe needle pierced the right jugular vein longitudinally. (E) The sterile silicone catheter was inserted into the jugular vein. (F) Fix the catheter and the proximal vessel.

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