Source Veins

Gelel Vein (ゲレル脈,Gererumyaku) is a source of life energy contained in a minerals often appearing a stones. The energy of the vein, when embedded into a person's body, grants them incredible regenerative powers as well as seemingly halt ageing. Those who have the stone inside their bodies can manipulate Gelel energy for combat purposes.

Shiogakure
Tide Vein: Located in the underwater village of Shiogakure. Unlike other veins, it is known to be manipulated with a weapon, which acts as a controller.

Land of Demon
DemonVein''' located underneath the village of Seishingakure within the land of Demons. Unlike other veins, it is usable by five original families of Seishingakure.

Trivia

 * It is noted the color of the energy produced by the veins is different for every vein.
 * The concept of Dragon Veins is loosely based

Also See

 * Dragon Veins