I chose to not wear a wire and tape people. I chose to not get immunity until - were accepted, whatever - until the independent counsel's office was comfortable with what I said was the truth. ↗
My initial interest, just prior to my work on cytokines, was on cell-mediated immunity and delayed hypersensitivity, mostly with respect to the cells that populated these reactions. ↗
In Darwin's time all of biology was a black box: not only the cell, or the eye, or digestion, or immunity, but every biological structure and function because, ultimately, no one could explain how biological processes occurred. ↗