For more than 40 years, the faculties of Duke University School of Medicine (SOM) and Stanford University SOM have encouraged or required students to engage in scholarship as a way to broaden their education and attract them to careers in academic medicine. A dedicated period of research was first integrated into the Duke curriculum in 1959 to provide an opportunity for students to develop into physician leaders through a rigorous scholarly experience in biomedically related research. Originally designed to foster experience in laboratory-based basic research, the third-year program has evolved in response to the changing landscape of medicine and shifting needs and career interests of the medical student population. Stanford University SOM also has a long-standing commitment to biomedical research and currently requires each student to complete an in-depth, mentored "scholarly concentration." In contrast to Duke, where most of the scholarly research experiences take place in an immersive third year, the Stanford program encourages a longitudinal, multiyear exposure over all four (or five) years of medical school. Although the enduring effects of embedding a rigorous research program are not yet fully known, preliminary data suggest that these experiences instill an appreciation for research, impart research rigor and methodologies, and may motivate students to pursue careers in academic medicine. The authors discuss the histories, evolution, logistics, and ongoing challenges of the research programs at Duke University SOM and Stanford University SOM.
High levels of expression of cloned genes have been obtained in mammalian cells by using poxvirus-derived insertion/expression vectors. These vectors employ the cisacting element (CAE I) that directs the transcription of one of the most strongly expressed genes of cowpox virus. This gene (the 160K gene) encodes the 160-kDa protein that is the major component of the A-type cytoplasmic inclusions.
Hepatitis B remains a significant risk to patients receiving chronic hemodialysis, but no certain method of prevention has been identified. We tested two vaccines, plasma-derived vaccine (40-micrograms dose) and recombinant-derived vaccine (40-micrograms and 20-micrograms doses), in 61 patients with chronic renal failure who were not yet dependent on dialysis. Patients were followed up clinically and with laboratory tests of kidney function and hepatitis B virus serology for one year. Significantly more recipients of plasma-derived vaccine responded to vaccination; they also achieved a higher titer of antibody to hepatitis B virus than did recipients of recombinant-derived vaccine when evaluated at 6, 7, 9, and 12 mo after vaccination. No serious side effects were observed with any vaccine preparation, nor were excessive adverse effects observed in any group. Compared with the dialysis patients previously studied, patients with renal failure who were not yet dependent on dialysis responded more favorably to the hepatitis B virus vaccine.
We provide an overview of general competencies and specialty specific recommendations to serve as a foundation for medical schools to develop robust 4th-year curricula and for medical students to plan their 4th-year schedules.
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