Palestinian officials say there is no sign Yasser Arafat has leukemia, but further tests are being conducted to determine the source of the Palestinian leader's illness.
The officials say doctors at this time have ruled out leukemia, a cancer of the blood.
Experts had speculated that Mr. Arafat might be suffering from leukemia due to an abnormally low blood platelet count.
A Palestinian diplomat in Paris also says Mr. Arafat is doing "much better, both physically and psychologically" since he was flown to a French military hospital on Friday.
In Mr. Arafat's absence, Prime Minister Ahmed Qureia will run the daily affairs of the Palestinian Authority, and former Prime Minister Mahmoud Abbas will run the Palestine Liberation Organization.