... number of researchers for providing scientifichelp and specimens, especially Prof. Dr. Henning and Dr. Witte of Erlangen,Dr. Langreder of Mainz, Prof. Dr. Mohr of the Tropical Institute of Hamburg,Dr. ... directors of these studies, Professors D. Hoelzer, T. Bu¨chner, U.Creutzig, and J. Ritter, for their consistently fine cooperation. We also thankthe Institute of Pathology of the University of Kiel, ... University of Kiel, headed by Prof. Karl Len-nert, and the current head of the Department of Hematologic Pathology,Prof. Reza Parwaresch, for preparing histologic sections of the tissue coresthat...