A Portable and Accurate Phosphate Sensor Using a Gradient Fabry-Pérot Array.

Here, a portable and accurate phosphate sensor using a gradient Fabry-Pérot array (FPA) is proposed. It can form a bidirectional gradient concentration (absorbance) distribution in the gradient FPA, simplifying the complex operations to get a standard curve and saving time. The gradient FPA can effectively filter out the interference (bubbles, light intensity, and salinity) while improving the absorbance, achieving a highly accurate and stable detection.

[A method for detecting bovine leukocyte adhesion deficiency in Holstein calves using polymerase chain reaction-single strand conformation polymorphism analysis].

Bovine leukocyte adhesion deficiency (BLAD) is an autosomal recessive disease caused by A-->G mutation in the CD18 gene. The disease is characterized by greatly reduced expression of the heterodimeric beta2 integrin adhesion molecules on leukocytes, resulting in multiple defects in leukocyte function and significant deficits on performance traits in Holstein cattle. In this study, primers were designed to amplify the CD18 gene fragment and BLAD was detected by PCR-SSCP in a simple, highly accurate and high throughput manner.