Which protein sequences are used to generate MACS Cytokines?

We use the entries in the UniProt database (http://www.uniprot.org) as a reference. Some cytokines naturally exist in several isoforms, and we generally use the isoform named “canonical” sequence as described in UniProt. For some cytokines, we have chosen other isoforms that are known to be more beneficial for cellular applications. Cytokines with improved sequences are the result of our research and development and cannot be found in the database.