Distribution of human platelet antigens in a Chinese population

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We report the distribution of the human platelet antigens HPA-1, -2, -3, -4 and -5 as determined using the polymerase chain reaction with sequence-specific primers in 100 random, healthy Chinese in Hong Kong. The HPA-1a, -2a, -4a and -5a genes were present in every sample tested, HPA-1b, -2b and -5b were rare, and the sample was monomorphic for HPA-4a. HPA-3a and -3b genes showed frequencies of 0.525 and 0.475 respectively. There was no departure from Hardy-Weinberg equilibrium in any of the five HPA systems studied.

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