Cough, Feeling of not being able to get enough air, Rapid heart rate (pulse) Feeling of not being able to get enough air, Pain or discomfort, Palpitations (fluttering in chest), Rapid heart rate (pulse) Palpitations (fluttering in chest), Pounding heart (pulse), Rapid heart rate (pulse), Shortness of breath.
The four main blood types are A, B, O and AB. They differ from each other by which antigens are present on the blood cells. They also have subgroups for each main types. So A has the sub group of AA or AO. Then there is the Rh or Rhesus blood type. Humans are usually +ive or -ive. With a number of antigens for this.
1 The main blood group system is ABO, with four blood types: A, B, O, AB. 2  Rhesus system, for which you can be positive or negative, is the second most important with regard to blood transfusions. 3  In total there are 32 recognised blood group systems, which all have either positive or negative indicators.