Muscle weakness is a symptom of a wide variety of mild to serious diseases, disorders and conditions. Muscle weakness can result from infection, trauma, malignancy, autoimmune diseases, and other abnormal processes.
Difference between O+ and O- Blood Group. Key difference: The blood groups O+ and O- are universal donors. The only difference is in the recipients to whom the blood is transfused; O+ can be transfused to any positive blood groups, whereas O- is transfused to both positive as well as negative blood groups. O+ blood group is a common blood group among most of the people.
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.here 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).