Fig. 1.
Schematic representation of 1 and 2 genes showing position and orientation of primers.
Primers A and B amplify a 1.8 kb fragment and D and E amplify a 2.1 kb fragment for −α3.7 and −α4.2 deletions, respectively. An amplification product of 3.2 kb for A and E primer pair indicates the presence of normal allele.