“The tumors located centrally were polypoid, protruding into the lumen of the bronchus and narrowing the lumen.”

“Four tunnels off the lumen of the proventriculus of the carpenter bee, Xylocopa virginica virginica, have been discovered.”

“The innermost layer adjacent to the lumen was occasionally difficult to distinguish.”

“I live in Flagstaff, AZ and the light pollution laws here limit the amount of lumens per acre.”

“Operating on 6 volts, this light provides 60 lumens of brightness to identify and target, and can subdue suspects without having to fire a shot.”

“The light intensity of fluorescent tubes is also measured and rated on another standardized scale called lumens.”

“Histologically, the disease is characterized by a bizarre population of neoplastic cells that are found systemically within the vascular lumina.”

“Microscopically, large neoplastic lymphoid cells with prominent nucleoli and frequent mitotic figures occlude small vessel lumina.”

“Fibrin and platelet thrombi were prominent in the lumina of the vessels and in the space beneath the endothelium.”