<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This report forms part of the study on the Rh phenotypes within the various ethnic nationalities in the south-south region of Nigeria. The aim is to demonstrate the Rh polymorphisms among the people of African descent. The frequencies of Rh blood group antigens and phenotypes of the Ibibio, Efik, and Ibo ethnic nationalities in Calabar municipality, Nigeria, were determined using standard serologic techniques. Of the 720 Calabar individuals tested, the frequencies of the Rh antigens within the nationalities were c (100%), e (96.38%), D (96.38%), E (15.22%), and C (3.62%) for the Ibibios; c (100%), e (95.60%), D (96.70%), E (21.98%), and C (0%) for the Efiks; and c (100%), e (94.29%), D (91.43%), E (28.57%), and C (2.86%) for the Ibos. The overall frequencies of the Rh antigens in these 720 individuals were c (100%), e (95.56%), D (94.44%), E (18.89%), and C (2.78%). Forty (5.56%) were found to be D–, while all were found to possess the c antigen. The most frequently occurring Rh phenotype was Dccee, with a frequency of 73.61 percent. The alternative allele, <italic>C</italic>, did not appear in homozygous form (<italic>CC</italic>) in the population tested. This study further demonstrates the variability of Rh blood group phenotypes in Nigeria and Africa. <italic>
<bold>Immunohematology</bold>
</italic> <bold>2005;21:21–24.</bold>
</p>
</abstract>

This report forms part of the study on the Rh phenotypes within the various ethnic nationalities in the south-south region of Nigeria. The aim is to demonstrate the Rh polymorphisms among the people of African descent. The frequencies of Rh blood group antigens and phenotypes of the Ibibio, Efik, and Ibo ethnic nationalities in Calabar municipality, Nigeria, were determined using standard serologic techniques. Of the 720 Calabar individuals tested, the frequencies of the Rh antigens within the nationalities were c (100%), e (96.38%), D (96.38%), E (15.22%), and C (3.62%) for the Ibibios; c (100%), e (95.60%), D (96.70%), E (21.98%), and C (0%) for the Efiks; and c (100%), e (94.29%), D (91.43%), E (28.57%), and C (2.86%) for the Ibos. The overall frequencies of the Rh antigens in these 720 individuals were c (100%), e (95.56%), D (94.44%), E (18.89%), and C (2.78%). Forty (5.56%) were found to be D–, while all were found to possess the c antigen. The most frequently occurring Rh phenotype was Dccee, with a frequency of 73.61 percent. The alternative allele, C, did not appear in homozygous form (CC) in the population tested. This study further demonstrates the variability of Rh blood group phenotypes in Nigeria and Africa. 
Immunohematology
 2005;21:21–24.

Rh antigens and phenotype frequencies of the Ibibio, Efik, and Ibo ethnic nationalities in Calabar, Nigeria

Immunohematology

This report forms part of the study on the Rh phenotypes within the various ethnic nationalities in the south-south region of Nigeria. The aim is to...

Rh antigens and phenotype frequencies of the Ibibio, Efik, and Ibo ethnic nationalities in Calabar, Nigeria

Published Online: Apr 20, 2020

Page range: 21 - 24

DOI: https://doi.org/10.21307/immunohematology-2019-388

Keywords
Rh antigens, Rh phenotypes, Ibibio, Efik, Ibo, Nigeria

© 2005 Z.A. Jeremiah, et al., published by Sciendo

Rh antigens and phenotype frequencies of the Ibibio, Efik, and Ibo ethnic nationalities in Calabar, Nigeria

Published Online: Apr 20, 2020

Page range: 21 - 24

DOI: https://doi.org/10.21307/immunohematology-2019-388

KeywordsRh antigens, Rh phenotypes, Ibibio, Efik, Ibo, Nigeria

© 2005 Z.A. Jeremiah, et al., published by Sciendo

Keywords
Rh antigens, Rh phenotypes, Ibibio, Efik, Ibo, Nigeria