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Alpha‐1‐antitrypsin (Pi)‐types in recurrent miscarriages

Chromosome analysis was carried out in a consecutive series of 57 couples with a history of recurrent miscarriage. All 114 subjects from these couples had normal karyotypes by conventional analysis. Pi typing was performed in 30 couples. The constellation of Pi heterozygosity in both partners occurred in two of the couples. The expected frequencies of the observed MS‐MS and MS‐MZ constellations occurring by chance would be 2.1 per 1,000 and 2.2 per 1,000 couples, respectively.