Different physical states of the same sequence can give different readings.
A sample is more than its formula
Peptides can self-associate into larger structures under some conditions. In a comparison of commercial Aβ42 samples, investigators observed differences in aggregation behaviour and discrepancies between assay methods. Aβ42 is a particular aggregation-prone example, not a general claim about the MC10 range.
Build a reproducible comparison
For aggregation-sensitive work, the preparation history, solvent, timing and readout method need to be controlled and reported. An apparently different biological response may reflect a different physical state of the sample. Verify the relevant material state instead of relying on a name and nominal mass alone.
When aggregation matters to an experiment, measure it and describe the sample preparation in the research record.
Sources
Read the original studies or guidance for methods, populations and limitations.
This article is general research information. It is not a Certificate of Analysis for an MC10 product or medical advice. MC10 materials are presented for in-vitro research only.
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