91.   A control group of aged rats not eating blueberry extract had no improvement.

92.   A control group of patients had no relatives with the condition.

93.   A control group consisting of fertile men was given the same regimens.

94.   A control group from the same area would be identified and tracked through the public school system.

95.   A control group of rats ate ordinary potatoes.

96.   A control group that trained using unrelated tones showed no improvement.

97.   A control group would receive no prayer at all, from start to finish.

98.   A control group on placebo showed little or no change in weight or body composition.

99.   A control group was given unadulterated clove oil to smell.

100.   A control group watched a patently unfunny nature video, then was tickled.