In this article, we show a method to make glass capillary needles with a 50-μm lumen. This technique significantly reduces the brain damage, minimizes passive diffusion of drugs and allows a precise targeting into the rodent brain.
Gonzalez-Perez, O., Guerrero-Cazares, H., Quiñones-Hinojosa, A. Targeting of Deep Brain Structures with Microinjections for Delivery of Drugs, Viral Vectors, or Cell Transplants. J. Vis. Exp. (46), e2082, doi:10.3791/2082 (2010).