Frequent intentional weight loss is associated with lower natural killer cell cytotoxicity in postmenopausal women: possible long-term immune effects.

Objective: Weight-loss attempts are likely to become more frequent as the prevalence of obesity rises. Repeated cycles of loss and gain are a common consequence of failed weight-loss attempts. The question of whether this pattern has negative health effects is unresolved.

Effects of perfluorohexane vapor on relative blood flow distribution in an animal model of surfactant-depleted lung injury.

Objective: To test the hypothesis that treatment with vaporized perfluorocarbon affects the relative pulmonary blood flow distribution in an animal model of surfactant-depleted acute lung injury.

Design: Prospective, randomized, controlled trial.

Setting: A university research laboratory.