Collective bargaining could also be defined as negotiations relating to terms of employment and conditions of work between an employer, a group of employers or an employers' organization on the one hand, and representative workers' organizations on the other, with a view to reaching agreement.
Emboli, embolus. Plural of embolus. An embolus is something that blocks the blood flow in a blood vessel. It may be a gas bubble, a blood clot, a fat globule, a mass of bacteria, or other foreign body. It usually forms somewhere else and travels through the circulatory system until it gets stuck.
Arterial embolization. This technique is used to block the artery that feeds the kidney that has the tumor. A small catheter (tube) is placed in an artery in the inner thigh and is moved up until it reaches the renal artery going from the aorta to the kidney.