Abstract
I examined 5 infants nursed with normally or strongly Arakawa-positive milk on administration of vitamin B to these infants and to their mothers, and obtained the following results: Both increase of red cell count and decrease of platelet count on the vitamin adminis-tration was very small. The blood picture of infants belonging to this group showed generally no remarkable-deviation from the normal picture even before the vitamin administration, so the change of it after administration of vitamin B was not remarkable.