Which precursor gene is the
ABO system controlled by?
The histo-blood group
ABO system and tissue transplantation.
Table 1: Distribution of blood groups according to ABO & Lewis systems Groups
ABO system A B AB O Normal Breast 21 3 1 25 (N= 50) (42%) (6%) (2%) (50%) Benign Breast 7 1 1 11 (N 20) (35%) (5%) (5%) (55%) Malignant Breast 57 10 4 40 (N=111) (51.4%) (9%) (3.6%) (36%) Chi-square (P value) [X.sup.2] = 5.9 (P > 0.05) Table 2: Frequency of secretor & non-secretor women according to inhibition of hemagglutination tests Groups Secretor Non-secretor Normal Breast (N= 50) 36 (72%) 14 (28%) Benign Breast (N= 20) 12 (60%) 8 (40%) Malignant Breast (N= 111) 43 (38.7%) 68 (61.3%) Chi-square= 16.11 (P value) < 0.0003
Marinaccio, Blood groups of the
ABO system and survival rate in gynecologic tumors", Minerva Ginecol.47:69-76(1995)
At the
ABO system, most of the heterogeneity was due to 'B' blood type.
The
ABO system was first described by Landsteiner in 1900, and remains the most important in the management of tissue and blood transfusion.
A new blood group character to the
ABO system. Lancet 1952; 1 : 903-4.
The human
ABO system includes four blood groups: A, B, AB, and O [10].
It has been suggested that the
ABO system has evolved under a positive selection pressure in both humans and other primates (2).
The
ABO system is used in the classification of what?
The
ABO system is divided up as follows - Group A (42 per cent of the population), Group B (8 per cent ), Group AB (3 per cent ), and Group O (47 per cent ).