Rh group (History to terminology) Flashcards
ISBT number 004
Rh blood group
Convert the following genotypes from Wiener nomenclature to Fisher-Race and Rosenfield nomenclatures, and list the antigens present in each haplotype.
a. R1r
b. R2R0
c. RzR1
d. rr
R1r
DCe/dce
Rh:1, 2, -3, 4, 5
R2R0
DcE/Dce
Rh:1, -2, 3, 4, 5
RzR1
DCE/DCe
Rh:1,2,3, -4,5
ryr
dCE/dce
RH: -1,2,3,4,5
What theory in 1940s, said that each person inherits a set of Rh genes from each parent (one D or d, one C or c, one E or e), because Rh genes are thought to be CODOMINANT
Fisher-Race
Rh-hr terminology: presence of CE (with D)
Z
When was Rh phenotype was reported in order of DCE
1946
How are Rh antigens inherited?
Codominant alleles
Introduced a new terminologies for Rh group in 1962
Richard Rosenfield and Co workers
“C” gene frequency for RH antigens in Caucasians
70%
Rh was named from
Rhesus Monkey
antigen is most potent, found in 85% of the white population and is always significant for transfusion purposes
D antigen
This case is where Dr. Levine found that over 90% is rh neg mother and rh positive father.
Erythroblastosis fetalis
“e” gene frequency for RH antigens in Caucasians
98%
Interpret this using “Alphanumeric Terminology
1,2,-3,5
Presence of D, C, e but absence of c
Created to more accurately represent the serological daya and to be more compatible with computer use
Alphanumeric Terminology
This terminology may be considered the phenotypic expression of the haplotype
Rh-hr terminology
It represents the presence of a single haplotype expressing three different factors
agglutinogen
Termsed for Anti-rhesus produced by animals
Anti-LW
Most commonly use terminology for Rh grouping
Fisher-Race or DCE term
Reported an antibody made by guinea pigs and rabbits when transfused with Rhesus monkey
Dr. Landsteiner and Dr. Alexander S. Wiener
The complement of genes inherited from either parent
Haplotype
Indicates that an individual’s rbc possess one particular Rh antigen (D antigen)
Rh positive
Rh-hr terminology: indicates absence of antigen
r
Under ISBT: what number was assigned to Rh blood group
004
represents the absence of D antigen in fisher race theory
d (small d)