Abstract
A 38-year-old healthy Japanese woman Mrs. N. has as much B and H substances in her saliva as have normal B individuals, but the B antigen in her red cells is very weak and H is undetectable.
Her serum contains weak anti-H. It was considered that Mrs. N. 's blood might be called Bh at the phenotypical level; the suffix “h” is intended to indicate a phenotype lacking the H substance.
