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Summary Further examples of the Lu(‐5) blood type have been found in a family with three siblings, providing evidence that it is an inherited character. Parents of the propositus were second cousins but are dead and the family study is incomplete. The results of Lutheran, Lewis and ABH secretor studies do, however, give some positive evidence of the possibility of linkage between Lu, Lu5 and Secretor, and make linkage between Lu5 and Le unlikely.
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Bowen et al. (1972) studied this question.
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