Zebrafish (Danio rerio) androgen receptor: sequence homology and up-regulation by the fungicide vinclozolin.

Steroid hormones regulate gene expression in organisms by binding to receptor proteins. These hormones include the androgens, which signal through androgen receptors (ARs). Endocrine disrupters (EDCs) are chemicals in the environment that adversely affect organisms by binding to nuclear receptors, including ARs.

First-year college students' attitudes about end-of-life decision-making.

This study analyzes attitudes about treatment of the terminally ill among a group of first-year undergraduate students--a cohort that was in high school when intense publicity and extensive political and judicial involvement in the Terri Schiavo case occurred. Data for the study were collected by structured personal interviews with 201 randomly selected, first-year students in the first half of fall semester, 2005. Students clearly make distinctions in the propriety of active euthanasia, passive euthanasia, and physician-assisted death.

A phylogenomic inventory of meiotic genes; evidence for sex in Giardia and an early eukaryotic origin of meiosis.

Sexual reproduction in eukaryotes is accomplished by meiosis, a complex and specialized process of cell division that results in haploid cells (e.g., gametes).

The do-not-resuscitate decision: the context, process, and consequences of DNR orders.

This study examines the process and consequences of an increasingly important element of the dying experience in American hospitals: the writing of a Do-Not-Resuscitate (DNR) order. The focus of the study is on the decision-making process and timing of the DNR decision, the impact of the DNR order on the dying experience, and the consequences of the DNR order for length of hospital stay and accrued medical charges. Patients with a DNR order are compared to those who were unsuccessfully coded.

The development of health protective behaviors among college students.

This study uses structural equation modeling and a panel design to explain participation in health protective behavior (HPB) among college students. The direct, indirect, and total effects of gender, social influences (parental and peer behavior), social attachments (activity involvement, social support, and romantic involvement), social triggers (personal health, acute illnesses, and personal or family health crisis), health value, and effort to improve health behavior on HPB are examined. A path model with a high goodness of fit and an R2 of .

Regular source of primary medical care and patient satisfaction.

As hypothesized, results indicate the greater the degree of continuity in the physician/patient relationship, the higher the level of patient satisfaction. The level of continuity was related to each of the five scale items individually and to the overall patient satisfaction scale. Even when patient background characteristics were controlled, continuity remained a key predictor of satisfaction with primary care received.

Patient satisfaction with primary medical care. Evaluation of sociodemographic and predispositional factors.

As patient satisfaction has been demonstrated to influence certain health-related behaviors (e.g., compliance with medical regimens and use of medical services), research has attempted to identify its key determinants.

EXTENSIVE CHROMOSOMAL DIVERGENCE WITHIN A SINGLE RIVER BASIN IN THE GOODEID FISH, ILYODON FURCIDENS.

Extensive variation in the number of metacentric chromosomes exists among populations of the viviparous goodeid fish, Ilyodon furcidens, in the Río Coahuayana basin of south central Mexico (states of Colima and Jalisco). The variation can be divided, somewhat arbitrarily, into four "cytotypes" with 0-2, 0-4, 6 and 10-16 metacentrics. Of these, the first, shared with the closely adjacent Río Armería and similar to other species of Ilyodon, is probably ancestral.