We have used EXSISERS for ratiometric monitoring of isoforms of the Tau protein.
manuscript: https://doi.org/10.1038/s41556-021-00678-x
cover: https://www.nature.com/ncb/volumes/23/issues/6
Please find a detailed protocol for EXSISERS here,
https://protocolexchange.researchsquare.com/article/pex-1440/v1
and the genetic constructs deposited here:
https://www.addgene.org/search/catalog/plasmids/?q=Westmeyer