See Also: annular illumination(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Illumination(medicine)
illumination(dictionary)
illumination(dictionary)
central illumination(medicine)
illumination, Kohler(medicine)
illumination, critical(medicine)
focal illumination(medicine)
erect illumination(medicine)

BRCA1 (medicine) and annular illumination (medicine)


BRCA1 (medicine)


BRCA1
<molecular biology> BRCA1 is a tumour-supressing gene, if even one copy of it is damaged, cancer can develop.

Certain mutations confer a high probability (85% lifetime risk) of developing breast cancer, and Other types cause ovarian cancer. Familial mutations of this gene are particularly common among people in the Ashkenazi Jewish ethnic group.


annular illumination (medicine)


annular illumination
<microscopy> The result of placing a stop in the first focal plane of the condenser to produce an illuminating cone of light with all the light flux near the surface of the cone. The central part of the cone will be dark. This arrangement is often used for a darkfield effect in low-power work by transmitted light. The condenser must be correctly focused and centreed. By reflected light, darkfield illumination is attained with an annular con-denser fitted around the objective for opaque objects. Annular illumination implies that the object is lighted from all sides.