Laminin was strong stained and found in alveolar septum,epithelial cells of alveolar,and the basement membranes of bronchiole and pulmonary vessels in cordal and linear distribution.

• 层粘连蛋白呈线状或索状分布于肺泡隔、肺泡上皮、小血管及细支气管上皮基底膜。