Search PubMed⌕ Search

Biomedical subjects

J L Tyler

Publications and source records attributed to J L Tyler.

At least 55 records · Page 3Linked to original sources
PubMed1980

Temporal limits for copulation-induced ovulation in the pentobarbital-blocked proestrous rat.

In two experiments, factors critical to copulation-induced ovulation (CIO) were examined. In Exp I cycling Sprague-Dawley rats were given 25 mg/kg sodium pentobarbital (PB) at 1345 h on proestrus and allowed overnight copulation starting at 1900 (dark onset), 2100, or 2300 h. Only the groups in which copulation began at 1900 or 2100 h displayed ovulation significantly more frequently than PB-treated controls. In Exp II rats received an atrial cannula on diestrus II and 25 mg/kg PB at 1345 h on proestrus. Four blood samples were taken over the course of an hour, starting at 1900 or 2300 h. Controls did not ovulate that night. Rats allowed to copulate for 30 or 60 min starting at 1900 h ovulated and showed elevated plasma LH levels during the period sampled. Copulation at 23 h or cervical probing at 1900 h did not induce LH release or ovulation. There were no differences in the behavior of the males or females during the first 30 min of cohabitation in either experiment; the females were highly receptive. It is concluded that a narrow temporal window exists for CIO, and that temporal changes in induced LH release but not behavior limit CIO.

Animals↗
PubMedDate not supplied

Transportable skills: the edge for the '90s.

Traditionally, when a senior-level executive was recruited for a new position, that person packed personal belongings, loaded the moving van, and concentrated on getting the family settled in a new location. Now, those executives have something else to take with them to their new jobs--transportable skills.

Career Mobility↗
PubMedDate not supplied

The heir apparent.

Explore the source record for details and available documents.

Health Facility Administrators↗
PubMedDate not supplied

Personnel management.

Explore the source record for details and available documents.

Career Mobility↗