ABH grouping of fresh and old dental pulp tissue by elution test

The ABH blood grouping was determined using the pulps of 293 teeth by theelution test. To ascertain whether or not the blood group of the extractedtooth would coincide with the actual blood group of the individual, the bloodgroups of teeth donors were identified by blood examination and used asreference samples. One hundred and twenty seven teeth were examined byelution test in the fresh state immediately after extraction, the remainingteeth [166] were left standing at room temperature and divided according tothe lapse of time after extraction into 3 groups of 49, 51 and 66 teeth to beexamined 1 to 6, 7 to 12 and 13 to 18 months after extraction, respectively. The results revealed that, in all fresh samples, there was completeconcordance between blood grouping results by elution test and those by bloodexamination giving 100% conclusive results. While in dental pulps examinedwithin 18 months after extraction, conclusive results were obtained in 93.9%,92.2% and 97% of samples examined within 6, 12 and 18 months after extraction,respectively

Genetic polymorphism of alpha -1- antitrypsin among Egyptians

The distribution of serum alpha-1-antitrypsin phenotypes was determined by theapplication of isoelectrofocusing technique on Egyptian population sample ofunrelated individuals [n = 220]. The estimated phenotype frequencies wereM1M1 = 0.20, M2M2 = 0.20, M3M3 = 0.10, M1M2 = 0.009, M1M3 = 0.136, and M2M3 =0.109. The gene frequencies among Egyptians were M1 = 0.518, M2 = 0.2545 andM3 = 0.2227. No rare variants were detected in the studied sample. Theresults obtained were compared with those of the other populations. Moreover,the study revealed a relatively higher discriminating probability [0.773] ofalpha-1-antitrypsin, than those of the other genetic markers suggesting thatalpha-1-antitrypsin could be a powerful tool in identification, e. g.paternity tests