Healing
The Healing skill determines your rate of success when using Bandages to heal the damage that a human (PC or NPC) has sustained. Therefore, it is highly beneficial to your Healing potential have a good understanding of human Anatomy.
It is possible for those who are at least journeymen (60-70 skill level) healers and also journeyman biologists to cure poisoned humans using Bandages. This possibility increases as skill level increases in both skills.
Furthermore, Adept (80-90 skill level) healers who are also Adept biologists can begin to attempt to resurrect players who have died using bandages. Grandmaster healers and biologists have the easiest time resurrecting deceased players.
Note that you will still not be able to communicate with ghosts unless you have the Spirit Speak skill.
Training Healing
In order to train the Healing skill, you must use Bandages either to heal damage, cure poison or resurrect humans.
See Also: Anatomy