1. L. O. Boréus andN. Chakravarty, Acta physiol. scand., in press (1960).
2. L. O. Boréus, Acta physiol. scand., in press. (1960).
3. J. F. Riley,The Mast Cells (E. & S. Livingstone Ltd. 1959), p. 73.
4. H. T. Graham, O. H. Lowry, N. Wahl, andM. K. Priebat, J. exp. Med.102, 307 (1955).
5. Ö. Haegermark, I.-L. Thon, andB. Uvnäs, Personal communication (1959).