X.509 Certificate Authentication with C# WinForms WebBrowser Control

I have a C# application that contains a System.Windows.Forms.WebBrowser and a local keystore containing an X.509 certificate. I need to have the WebBrowser control use the X.509 certificate when communicating with the web application it displays. Looking over the documentation for the WebBrowser control and the underlying ActiveX control, I don't see a way to attach the certificate. Preferably, it would only be attached to the embedded control and not globally to Internet Explorer. How can this be accomplished?