Seems Dr. Graves eventually died of AIDS. Obit:
 
                
        In March 2009 his suit against the government for disclosure of its
        role in the development of AIDS was accepted.  The Justice
        Department is engaged, and lawyers have been assigned to the
        case.
        
        Soon after, his health began to deteriorate.  
        
        The other thrust of Dr. Graves work was his interest in having a
        certain AIDS cure tested clinically.  This was Tetracyl, a
        silver oxide, patented by Dr. Marvin Adelman as a cure for the
        HIV virus.  The efficiency of this treatment  has not been
        researched.  Some patients have reported eradication of the
        virus, other, usually more advanced, cases have not responded.
        
        After March Graves continued to lose ground.  He tried another
        injection of Tetracyl, but the results were not positive.  He
        had a bone infection and his T-cells were down to 20.  Valiently
        putting his life on the line for what he believed, he elected
        for one more Tetracyl before he resorted to retrovirus
        medications.
        
        Last Monday night he had severe chest pains and his excellent
        caretaker-boys took him to the hospital.  Next morning he was
        intubated, comatose, and incommunicado.  Thursday morning his
        sister called and said he had an intractable lung infection.  He
        was to be put on "comfort care" at 2:30, meaning life support
        would be withdrawn and more morphine would be applied.
        
        He died that afternoon.