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What is the Most likely ratio normalization strategy?

When performing LC-MS quantitation, there are numerous sources of experimental variance that can confound the quality of your results (variation in the starting amount of sample, variation in the LC-MS measurements, etc.). Having a robust normalization strategy that...

Understanding MS1 Peak Intensity in ProteinPilot software

The “Intensity (Peptide)” values come from LCMSReconstruct, in ProteinPilot software 5.0. It maps the RT, m/z, intensity MS1 surface to find the peak information for the peptide. The Intensity (Peptide) is a weighted sum of the heights of the isotope series at the...

MRM method transfer from a SCIEX Triple Quad or QTRAP 6500+ system to the SCIEX 7500 system

MRM method transfer from a SCIEX Triple Quad or QTRAP 6500+ system to the SCIEX 7500 system

General recommendations when beginning method development Objective: The purpose of this document is to provide a quick reference for transferring MRM-based quantification methods from a SCIEX Triple Quad or QTRAP 6500+ system to a SCIEX 7500 system. While the best...

A rising star in food allergen research: proteomics of shellfish allergen

A rising star in food allergen research: proteomics of shellfish allergen

It’s important to know what you’re eating, especially if you suffer from a food allergy.

About 220 million people worldwide live with a food allergy.1 These numbers, along with the complexity and severity of conditions, continue to rise. In America, there are about 32 million food allergy sufferers—5.6 million of those are children under the age of 18.2.2 That’s 1 out of every 13 children, or about 2 in every classroom. From a financial perspective, the cost of food allergy childcare for US families is up to $25 billion

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