The networks of veins in leaves share universal features ... auxin-based story to produce something much closer to a real explanation, the result of an almost accidental observation of similar ...

Known as varicose veins, these blood vessels, which return blood from the legs to the heart, are actually a more superficial system. The real, working venous system for the legs lies deeper ...

Varicose veins are twisted, swollen veins that occur due to blood buildup. They may be blue or dark purple. Treatment is not always necessary but may involve remedies such as exercise and ...