Time line of test session activities. Each exposure equals 2 trials one with full-fat and one with nonfat cream cheese, in random order. BD, blood draw; A, first treatment, 10-s exposures; B, second treatment, 20-min exposures to nonresponders to A; C, third treatment, 5-min exposures to responders to B; D, third treatment, 2-h exposures to nonresponders to B. Responder, triacylglycerol rise >10 mg/dl over baseline within 30 min.