EXPERIMENTAL STUDIES ON IMMUNITY IN CANCER

We are all so acutely concerned with the efforts that are being made to learn something concerning the power of the animal organism to protect itself, and possibly to confer immunity against malignant growths, that there will undoubtedly be general interest in the discussions and articles by which the German investigators have recently tried to gather up the loose ends of the subject and to take inventory of our actual achievements and knowledge of the problem. A symposium on cancer problems at the last meeting of the German Pathological Society in Kiel,¹ together with the animated discussion that followed, serves to give a good insight into the views now held by German pathologists, while Anton Sticker, one of the active investigators of transplantable tumors, has recently published a terse summary of the existing situation concerning "the immunity and spontaneous healing of cancer according to the results of the modern