Porcine reproductive and respiratory syndrome virus (PRRSV) is an arterivirus that emerged in the late 1980s in both Europe and North America as the causative agent of porcine reproductive and respiratory syndrome (PRRS), now the most important disease of swine worldwide. Despite extensive characterization of PRRSV proteins by direct analysis and comparison with other arteriviruses, determinant...

Beet necrotic yellow vein virus (BNYVV) is a multipartite RNA virus. BNYVV RNA3 does not accumulate in non-host transgenic Arabidopsis thaliana plants when expressed using a 35S promoter. However, a 3'-derivative species has been detected in transgenic plants and in transient expression assays conducted in Nicotiana benthamiana and Beta macrocarpa. The 3'-derivative species is similar to the pr...

Three protein species were identified in purified transmissible gastroenteritis virus particles (strain Purdue). They are thought to represent constituents of the peplomer (E2; molecular weights of 280,000 and 240,000), the envelope (E1; molecular weights of 28,000, 31,500, and 33,000), and the nucleocapsid (N; molecular weight of 48,000). In infected cells, proteins with molecular weights of 1...

African American woman are 43% more likely to die from breast cancer than white women and have increased the risk of tumor recurrence despite lower incidence. We investigate variations in microsatellite genomic regions-a type of repetitive DNA-and possible links to the breast cancer mortality gap. We screen 33 854 microsatellites in germline DNA of African American women with and without breast...

beet necrotic yellow vein benivirus (bnyvv) as one of the most important virues of sugar beet is the causal agent of rhizomania. bnyvv, as a type member of genus benyvirus has four types a, b, p and j, that are restricted to specific geographic areas. types a and b are similar in pathogenicity, but p and j types that have rna5 are more aggressive. these types cannot be distinguished serological...