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.
1 O positive is the most common blood type and most likely to be transfused. 2  O negative donors are the âUniversal Donor.â People with O negative blood are universal red blood cell donors. 3  This means that their red blood cells can be transfused to any blood type.