Gold nanocubes etching enhanced light scattering immunoassay for highly sensitive detection of Staphylococcus aureus enterotoxin A.

An innovative light scattering immunoassay was developed using an AuNPs etching strategy. Three types of anisotropic gold nanoparticles, including gold nanocubes, nanorods, and nanoflowers with distinct morphologies, were utilized to investigate how these morphological differences affect the sensitivity of light scattering signal transduction. Based on theoretical insights into light scattering and electromagnetic fields, gold nanocubes were identified as the optimal probes for enhancing light scattering signal transduction and were employed to construct an immunoassay for detecting staphylococcal enterotoxin A (SEA).

[An epidemiological study of the neoplasm mortality in Gejiu residents from 1996 to 2005].

Objective: To assessment the trend of the mortality of the neoplasm among the residents in Gejiu city of Yunnan province and to provide scientific evidences for the neoplasm prevention.

Methods: Data of mortality of the neoplasm from 1996 to 2005 was collected and analyzed through a retrospective survey.

Results: The mortality was going up in the recent epidemiological surveys.