1 Shortness of breath. 2  Chest pain. 3  Associate symptoms of pleural effusion due to an underlying disease include: 4  Night sweats. 5  Coughing up blood. 6  Fever. 7  Chills. 8  Thoracentesis is used to draw off the pleural fluid for analysis. 9  A thin needle is inserted between the ribs into the fluid collection.
The ABO blood group isn't the only one. In fact, there are about 34 different human blood groups. Now, scientists in Nature Genetics have explained the genetic basis behind a rare blood group called Vel. Vel Blood Group Most people are Vel+ (Vel-positive), meaning that they possess the Vel antigen on the surface of their red blood cells. However, about 1 in 5,000 individuals are Vel- (Vel-negative), and thus do not carry the antigen. Their immune system recognizes the Vel antigen as foreign, and if given Vel+ blood, they can experience kidney failure or possibly death. A screen currently exists for this blood type, but it can be inaccurate; therefore, identifying the blood type's genetic basis will allow doctors to more easily screen patients.
1 White Blood Cells: White blood cells, also known as leukocytes, make up a very small percentage of the total number of cells in the bloodstream, but have important functions in the bodyâs immune system. 2  There are two major classes of white blood cells: granular leukocytes and agranular leukocytes. Venules are similar to arterioles as they are small vessels that connect capillaries, but unlike arterioles, venules connect to veins instead of arteries. 2  Venules pick up blood from many capillaries and deposit it into larger veins for transport back to the heart.