Fig. 3From: Evaluation of feline heartworm disease based on gross necropsy, serology, pulmonary histopathology, and radiographic evidence in adult shelter cats in northeastern AlabamaHistological sections of fixed perfused right caudal lung lobes from selected cats showing a normal vessel and one with occlusive disease: A a normal pulmonary arteriole with a 20% wall-to-lumen ratio, B a diseased pulmonary arteriole with a > 90% wall-to-lumen ratioBack to article page