The Hoeppli phenomenon in schistosomiasis japonica: historical findings and additional investigation in bovines.

The present paper deals with a buried knowledge of the early findings of the Hoeppli phenomenon in cattle infected with Schistosoma japonicum together with a revised list of bovines and other mammalian species in which this phenomenon has been found. It was noted that the percentage of the mature-egg granulomas with positive Hoeppli phenomena varied with the species of bovines, ie, higher positive percentage in the more susceptible cattle than in the less susceptible buffalos. The radiating filaments in fringes of the phenomenon were also stronger in cattle than in buffalos.