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K Kunitomo

Publications and source records attributed to K Kunitomo.

40 records · Page 3Linked to original sources

A method for the automated screening for hepatitis B surface antigen.

A reverse passive hemagglutination (RPHA-G) technique for the automated screening of hepatitis B surface antigen (HBsAg) on the Groupamatic 360 (Kontron International, Zürich, Switzerland) has been developed. It is more sensitive than manual RPHA (RPHA-M) and nearly as sensitive as radioimmunoassay (RIA); it detects 6 ng/ml of HBsAg, compared to 3 ng/ml by RIA and 25 ng/ml by RPHA-M. Although it is slightly inferior to the other two methods in respect of specificity, the incidence of false-positive reactions was only 0.34%. The test can also be performed manually without the Groupamatic.

Automation↗

Blood chimeric twins: an example of blood cell chimerism.

A man and his twin sister were found to have two types of circulating red cells. The man had 89% A1 cells of his own and 11% A1B cells derived from his sister. The woman had 12% A1B cells of her own and 88% A1 cells derived from her brother. The two lines of red cells also had different Duffy and Kidd groups. The lymphocyte karyotype in the brother was 68% XY and 32% XX, and that in the sister was 60% XX and 40% XY. The possible mechanisms for producing different proportions of red cells and lymphocytes are discussed.

ABO Blood-Group System↗