nitrogen (ËnaÉªtrÉdÊÉn ) noun. a. a colourless odourless relatively unreactive gaseous element that forms 78 per cent (by volume) of the air, occurs in many compounds, and is an essential constituent of proteins and nucleic acids: used in the manufacture of ammonia and other chemicals and as a refrigerant.
Polycythemia Vera: Doctor Discussion Guide. Since polycythemia vera is a type of blood cancer, you'll want to see a hematologist. Here are some questions to ask during your next appointmentâ¦ read more read more
Polycythemia vera is a disorder of the blood-producing cells of the bone marrow that results in overproduction of red blood cells. The cause is not known. People may feel tired and weak, light-headed, or short of breath, or develop symptoms caused by blood clots.he cause is often unknown, but more than 95% of people with polycythemia vera have a mutation in the gene called JAK2. This mutation causes excess cell production. Blood cells are normally produced in the bone marrow. Sometimes the spleen and liver also start producing blood cells.