Immunogenic fraction active against bilharziosis, its preparation, and immunizing compositions containing same.
In this glycoprotein, extracted from a mollusc haemocyanin, the carbohydrate fraction represents 5 to 25% of the glycoprotein molecule, and the molar composition of the aforementioned carbohydrate fraction (calculated on the basis of 3 mannose residues) is substantially as follows: <IMAGE>