Fig. 2From: Research article expression of surfactant protein-A and D, and CD9 in lungs of 1 and 30 day old foalsImmunohistology for CD9 protein: The CD9 staining is observed in the vascular endothelium (black arrows) of blood vessels (BV) and alveolar septa (red arrows) of one day old (A) and 30 day old (B and C) foals. The bronchiolar (BR) epithelium is negative (black arrows). Bar = 20 μmBack to article page