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.
2.There are four major blood groups, and they are also subject to the Rh factor, so in reality there are 8 human blood types. The types are A+, A-, B+, B-, AB+, AB-, O+ and O-. Blood types are inherited by the person inheriting one allele for a given blood group from one parent and another from the other parent.