Subgroups of B substance occur rarely.
How encountered:
(1) weak or absent reaction with antisera (which now occurs infrequently with use of oligoclonal antisera, which are able to agglutinate cells with decreased or variant B antigens)
Method for evaluation:
(1) reaction of cells with specific antisera or with lectins having an activity mimicing an antisera
(2) if the person is a secretor, the presence or absence of A substance in the saliva
|
Findings |
B |
B3 |
Bm |
Bx |
|
agglutination of cells with anti-B |
4+ |
1+, mixed field |
0 |
0 to +/- |
|
agglutination of cells with anti-A,B |
4+ |
2+ mixed field |
0 to +/- |
0 to 2+ |
|
agglutination of cells with anti-A |
0 |
0 |
0 |
0 |
|
agglutination of cells with anti-H or lectin Eulex europaeus |
0 |
4+ |
4+ |
4+ |
|
B substance in saliva of secretors |
Yes |
Yes |
Yes |
No |
Specialty: Clinical Laboratory
ICD-10: ,
