A gland placed somewhere in your body which can release a pre-loaded dose of a substance, like a drug or potion, directly into your bloodstream when a predetermined condition is met. As long as the gland is placed directly below your skin it can be reloaded with a simple syringe, but the gland can be detected by a careful inspection. A gland placed deeper inside your body is undetectable from the outside, however it can only be reloaded by a trained Bioficer.