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 Group O-is the universal donor, but a person with O-blood type can only receive this type. 2  Group A+ can donate red blood cells to A+ and AB+ recipients. 3  Group A-can donate red blood cells to A+ or A-and to AB+ or AB-recipients.4  Group B+ can donate red blood cells to B+ and AB+ recipients.lood types are inherited. The four major blood groups are O, A, B and AB. They are also positive or negative (the Rh factor), creating eight major blood types. Your type is determined by the presence or absence of antigens on the surface of your red blood cells.