“These stripes often alternate between dense opacity and a milky translucence that barely hides the underlying layers.”

“There was an opacity in his writings which consisted of highly expressive language coupled with contradictory views.”

“This ingenuous charm contrasts with Mason's greater worldliness, greater opacity.”

“Chest radiography at this time revealed bilateral opacities in both lower lung lobes.”

“During the exudative phase, chest radiographs reveal a progression from diffuse interstitial infiltrates to diffuse, fluffy, alveolar opacities.”

“The complexity its admirers celebrated was usually generated in their own attempts to make sense of its opacities.”