Though the discovery of the selective and potent inhibitor of type V cyclic GMP phosphodiesterase, sildenafil, has meant considerable advance in the treatment of impotency, 5,6 the role played by ...

Veins form part of our circulatory system along with the arteries. The arteries are the strong, elastic vessels that take fresh oxygenated blood from the heart out to parts of the body to deliver ...

Veins work against gravity every single day – and over time, that effort adds up. As the body ages, venous tone and valve efficiency may gradually decline, making it harder for blood to move ...

Tissues were fixed through the immersion in 4% paraformaldehyde in 0.1 M sodium phosphate buffer (PB), pH 7.4 at 4°C for 24–48 h, and later on were placed in a cryoprotective PB solution containing 30 ...