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.
O Positive: O + blood type means you have the rh antibody. If you receive o negative blood, which has no rh antibody, you are ok. If you receive o+ blood, you're ok. But if you donate blood, there may be a problem to the recipient, if they have negative blood type.