[Paul Ehrlich (1854-1915) and his contacts with East European physicians at the time of testing the first chemioterapeutics].

Among numerous scientific contacts which Paul Ehrlich had with foreign scientists information about his contacts with East European scientists is very limited. The communiqué will deal with some of the particulars concerning Ehrlich's co-operation with physicians from East Europe directly before the practical application of the chemioterapeutics among others he was in touch with the Russians: Georgi N. Gabryczewski, Alexander A. Władimirow and a Finn Julius Iversen. The contacts originated during Robert Koch bacteriological courses at the Institute of Hygiene in Berlin. Only between 1885-1988 at least 11% of participants came from the countries of Eastern Europe. Ehrlich and Gabryczewski correspondence indicates that such a co-operation had already existed in the 90-ties, at the time of the research of a therapeutic influence of aniline dyes like diacetylparaaminophenol and triasid at spirillioza (recurrens). Iversen, a chief physician of Obuchow Hospital in St. Petersburg, was one of the first who after initial tests (Atoxyl, Arsazetin), at Ehrlich's request successfully used 606 preparation in case of spirochaeta infections.