The FDA based its decision to approve Linzess on the results of two randomized, double-blind, placebo-controlled clinical studies. 90% of the patients in the trials were female. In the open-label, long-term trials, 2147 patients with IBS-C received 290 mcg of Linzess daily for up to 18 months.
1 Everyone has one of four blood types â A, B, AB, or O â which is inherited from your parents. 2  Your blood type is determined by the presence or absence of two antigens â A and B â on the surface of red blood cells.A third antigen, called Rh factor, will either be present or absent. Antigens are substances that may trigger an immune response, causing your body to launch an attack if it believes they are foreign.hile all blood is similar in its components (such as containing red cells, platelets, and plasma), it also has important characteristics that make it unique. Your blood type is determined by the presence or absence of two antigens â A and B â on the surface of red blood cells.
Report Abuse. The two most common kinds of tests to determine your blood type: the ABO Test and the Rhesus (or Rh) Test. The ABO Test classifies people's blood into one of four types: A, B, AB, or O. If your red blood cells have the A antigen, you have type A blood.If your red blood cells have the B antigen, you have type B blood.If you have neither the A nor B antigen, you have type O blood. Your plasma contains antibodies against both type A and type B blood. If your red blood cells have both the A and B antigens, you have type AB blood.Your plasma does not contain antibodies against either type A or type B blood.our plasma contains antibodies against both type A and type B blood. If your red blood cells have both the A and B antigens, you have type AB blood. Your plasma does not contain antibodies against either type A or type B blood.