Chronic myeloproliferative diseases. Chronic myeloproliferative diseases are caused by an overabundance of differentiated bone marrow cells that result in the accumulation of erythrocytes, granulocytes, monocytes or platelets. Polycythemia Vera. This condition is marked by an overproduction of RBCs.
Isabela Island, Galapagos. Isabela lies in the heart of the Galapagos Islands. Hidden past the horizon, the archipelago's largest island keeps pure, protected and distant from the ingenuity of man.
Volcano Erupts On Galapagos Islands In this photo released by the Galapagos National Park, lava flowing down the northeastern flank of the Cerro Azul volcano on the Isabela island, the largest of the Galapagos Islands, is seen Friday, May 30, 2008.