Synchronous secretion of luteinizing hormone and prolactin in the human luteal phase: neuroendocrine mechanisms.

Studies of normal luteal phase women have shown that increases in serum LH and PRL are commonly synchronous. This study was designed to investigate the possible neuroendocrine mechanism(s) underlying this phenomenon. Six normal women were studied during the midluteal phase of 2 cycles.

Electroimmunoassay of a subunit protein in a macromolecular complex (apolipoprotein B in human plasma very low density lipoprotein); implications for other electroimmunoassay systems.

With an electroimmunoassay ("rocket") system for the apolipoprotein B component of the plasma very low density lipoprotein complex we obtained results which were similar to those obtained by a colorimetric tetramethylurea extraction method. Results were up to twice as high as those using radioimmunoassay. Low density lipoprotein containing apolipoprotein B as the only demonstrable protein component was used as the standard for these assays.