On the effect of dyes on experimental tumors

In the article: "On the therapeutic effect of dyes in malignant tumors" we reported the literature data concerning the attempts to treat tumors in humans with dyes, mainly isaminblau. In the following years a number of new favorable reports on the effect of this dye on tumors have appeared, with few exceptions this method of treatment has been tried only clinically, the data obtained in the experiment are incomplete and even contradictory.