Japan's ailing Emperor Hirohito remained in stable condition Saturday amid reports that last week's series of transfusions has led to a slight improvement in his anemia.

Palace spokesman Kenji Maeda told an evening news conference that the 87-year-old monarch's vital signs showed only slight fluctuations during the day and that he neither discharged blood nor required a further transfusion.But the spokesman said that doctors fear the emperor's internal bleeding is continuing and a team of five physicians was ready to give him more blood at any time.

Hirohito, the nation's figurehead ruler for 61 years, has remained in a serious but stable state for more than two weeks after discharging a large amount of blood.