1. Forsgren, A., and Sjöquist, J., (1966),J. Immunol. 97, 822.
2. Kronvall, G., Seal, U. S., Finstad, J., and Williams, R. C Jr., (1970),J. Immunol. 104, 140.
3. Jonsson, S. (1977), Radioimmunoassay Related Procedures Med. Proc. Int. Symp.
4. Langone, J. J. (1978),J. Immunol. Methods 24, 269.
5. Ying, S. Y., and Guillemin, R. (1979),J. Clin. Edocrinol. Metab. 48, 360.