Ultrafiltration of the parathyroid hormone

Abstract

* Measured on descending side. t Since no attempt was made to dialyse at pH 3 it seems probable that the height of this boundary may have been artificially increased.

A mouse urine phosphate assay for parathyroid hormone, with certain applications

“…Some further work on the properties of diffusates of acetic acid extracts of parathyroid glands similar to those mentioned by Davies & Gordon (1953a) has recently been carried out. As will be described in another paper (Davies & Gordon, 1955) such solutions have been found to be active by the present assay and in the only case where, in addition, activity in respect to plasma calcium levels was tested, a positive result was obtained. This suggests that our earlier failure to obtain a calcium effect with rather similar material (Davie,s & Gordon, 1953 a) may have been due to the presence of unduly high levels of impurities.…”