Why Can’t You Use Blood from Someone Who Has Different Blood Group Than You

Blood is made up of same basic elements,not blood is alike.There are 8 different common Blood types,but in the eight blood groups there are only four major common blood groups.Different blood groups are determined by the presence and absence of two certain antigens (A & B) substances on the surface of red blood cells.In addition to these two antigens A and B there is one third antigen called as Rh factor.These Rh -ve blood is given to Rh -ve patients only.They can give Rh +ve blood or Rh -ve blood may be given to Rh positive patients.Blood types are very important when a blood transfusion is necessary.http://www.citybusinessinfo.com/blog/post/why-can%E2%80%99t-you-use-blood-from-someone-who-has–different-blood-group-than-you

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