P.M.M. Dourado, J.M. Tsutsui, J.M.T. Santos, V.D. Aiello, W. Mathias Jr., J.A.F. Ramires, P.L. da Luz and A.C.P. Chagas (2006). Bioeffects of albumin- encapsulated microbubbles and real-time myocardial contrast echocardiography in an experimental canine model. Brazilian Journal of Medical and Bilogical Research, 39: 825-832.  

Figure 2. Photomicrography of a sub-pleural lung sample showing mild hemorrhage (arrows), characterized by erythrocytes inside the alveolar spaces. Hematoxylin-eosin; bar = 100 µm.