Blood blood clotting in a transparent container. When blood is drawn in a glass container and left undisturbed for about an hour, four different layers can be seen. A dark clot forms at the bottom (the "black bile"). Above the clot is a layer of red blood cells (the "blood"). Above this is a whitish layer of white blood cells (the "phlegm"). The top layer is clear yellow serum (the "yellow bile"). The ABO blood group system was discovered in the year 1900 by Karl Landsteiner. Jan Janský is credited with the first classification of blood into the four types (A,
We Sweat Blood Jonsson<br> Mastered at Polar Studios, Stockholm, Sweden<br> Artwork by Walse Custom Design<br> Photos by Jesper Lindgren<br> Backing Vocals on Strut by Dregen<br> Backing Vocals on “Wait a Minute” by Rosie Celano<br> Group vocals on “I love living in the City”, “Strut” by Rosie Celano, Helga Rossi, Fionnuala Jamison, Melinn Chaban, Lionel Pedro, Dave Pedro and Paul Bozzi<br> Backing Vocals on “WE SWEAT BLOOD”, the band with Matteo We Sweat Blood We Sweat Blood is the second album by Canadian rock band Danko Jones. The album was re-released on April 19, 2005 in the United States with two additional tracks from