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Pituitary gonadotropin content in gonadectomized rats. Immunoassay measurements influenced by extraction solvent and testosterone replacement
Pituitary gonadotropin content gonadectomized rats Immunoassay measurements extraction solvent
2009/2/23
Increasing interest in events regulating gonadotropin synthesis and secretion led to the reexamination, by radioimmunoassay (RIA), of the pituitary content of luteinizing hormone (LH) and follicle s...
Relationships between computerized measurements of motion of frozen-thawed bull spermatozoa and fertility
computerized measurements motion frozen-thawed bull spermatozoa fertility
2009/2/23
A computerized system (CellSoft, CRYO Resources, Ltd.) was validated using video tapes of frozen-thawed bull spermatozoa diluted in filtered (0.2 micron) egg yolk-citrate extender (8 X 10(6) spermat...
Effects of substrate and separation method on acrosin amidase measurements
Enzyme activity DL-BAPNA L-BAPNA swim-up
2009/2/16
The purpose of this study was to increase the accuracy and reproducibility of the acrosin amidase assay and to assess the effects of different methods of sperm isolation on total sperm acrosin act...
Exogenous Testosterone Alone or With Finasteride Does Not Improve Measurements of Cognition in Healthy Older Men With Low Serum Testosterone
Aging testosterone replacement memory visual spatial function
2008/12/24
Testosterone (T) levels decline as men age, but it is unclear whether this has an effect on cognition. Some studies indicate that lower T levels are associated with memory loss; thus, maintaining a...