1.   Regulatory volume decrease after cell swelling in hypo-osmotic media is mediated by KCl loss, for which there are two main mechanisms.

2.   OPEC reached its decision after two days of talks, attesting to the difficulty delegates faced in working out the specifics of the volume decrease.

3.   However, the adjournment of the meeting until Saturday attests to the difficulty delegates face in working out the specifics of the volume decrease.

4.   However, the prospect that the meeting would continue on Saturday attests to the difficulty delegates face in working out the final details of the volume decrease.

5.   The unusually long time it took OPEC to reach a decision attests to the difficulty delegates faced in working out the specifics of the volume decrease.