Paul Ehrlich (1854-1915) and his co-workers: Dr. Boehncke, Prof. Bechold, Dr. Benario, Dr. Mouriz, Conradi, Dr. Muller, Dr. Nathan, Dr. Bierbaum, Prof. Apolant, Prof. Sachs, Exz. Egrlich, Monck, Dr. Scaffidi, Erst, Kadereit, Goldner, Kruger.