Surgery is excellent therapy for hyperthyroidism, with no mortality,and few complications or recurrences. It achieves euthyroidism rapidly and consistently, avoids long-term risks of radioactive iodine and antithyroid medications, provides tissue for histology,renders childbearing immediately possible, and allows absolute titration of thyroid hormone. Advancements such as preoperative preparati...

Choline acetyltransferase (EC 2.3.1.6) was studied in human cerebrospinal fluid and blood. Sensitivity, precision and reproducibility of the radioactive assay were evaluated with a homogenate from pig brain and with partially purified enzymes from bovine brain and human placenta. Contrary to other reports, with the assay used in the present study, choline acetyltransferase activity was not dete...

The radioactive material in urine after parenteral radioactive hydroxocobalamin is composed of radioactive cyanocobalamin, radioactive hydroxocobalamin, and a radioactive anionic complex. Studies in vitro suggest that these materials have a similar microbiological activity. Comparison of the amounts of radioactive and microbiologically active material in urine after parenteral radioactive hydro...