Blood Types

Sex,Blood Type,Rhesus,Count
Male,Unknown,Unknown,27
Male,A,Positive,6
Male,A,Negative,0
Male,B,Positive,2
Male,B,Negative,4
Male,AB,Positive,0
Male,AB,Negative,2
Male,O,Positive,5
Male,O,Negative,4
Female,Unknown,Unknown,24
Female,A,Positive,9
Female,A,Negative,2
Female,B,Positive,2
Female,B,Negative,1
Female,AB,Positive,2
Female,AB,Negative,0
Female,O,Positive,8
Female,O,Negative,2