Title: Sigmoid fitting in Excel (Excel Solver Add-In) v1
Abstract: This protocol covers how to fit sigmoidal curve to data within Excel, and allows rapid estimation of EC50/IC50 values from experimental dose-response data. Although R or other specialized software is more suitable for detailed analyses, it is sometimes useful to perform sigmoidal fitting within Excel. Note that this is just a simplified version (only sigmoid fitting) of the protocol reported in Gerdi Kemmer & Sandro Keller (2010) Nat. Protocol 5: 267–281, and intended for routine laboratory use.