In the United Kingdom a lecturer is usually the holder of an open-ended position at a university or similar institution, often an academic in an early career stage, who teaches and also leads or oversees research groups.he academic levels in Australia are associate lecturer (academic level: A), lecturer (B), senior lecturer (C), associate professor (D), and professor (E).
There are four main blood types: type A, type B, type AB and type O. Additionally, if a substance called Rh factor appears on the surface of the red blood cells, a person is considered to be Rh+ (positive). Type O+ is the most common blood type, while AB- is the least common. But not all ethnic groups have the same proportion of blood types. For example, Hispanics have a high number of O blood types, while Asians have a high number of B blood types.
Human blood is typed by certain markers (called antigens) on the surface of red blood cells. Blood type may also be done to see if two people are likely to be blood relatives. The most important antigens are blood group antigens (ABO) and the Rh antigen, which is either present (positive, +) or absent (negative, -). So the two most common blood type tests are the ABO and Rh tests. The ABO test shows that people have one of four blood types: A, B, AB, or O. If your red blood cells have: The A antigen, you have type A blood. The liquid portion of your blood (plasma) has antibodies that attack type B blood.