Quality of MALDI-TOF mass spectra in routine diagnostics: results from an international external quality assessment including 36 laboratories from 12 countries using 47 challenging bacterial strains.

Objectives: Matrix assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry (MS) is a widely used method for bacterial species identification. Incomplete databases and mass spectral quality (MSQ) still represent major challenges. Important proxies for MSQ are the number of detected marker masses, reproducibility, and measurement precision.

Impact of a high-fat diet containing canola or soybean oil on body development and bone; parameters in adult male rats.

Introduction: The role of the fatty acid in the prevention or progression of chronic diseases has generated significant interest on the part of researchers. Thus, our objective was to evaluate the long-term effects of high-fat diet containing soybean or canola oil on body development and bone parameters of male rats.

Methods: After weaning, rats were grouped and fed either a control diet (7S) or a high-fat diet containing soybean (19S) or canola oil (19C).