I am uncertain if and how to punctuate if I use only one sentence for the following idea:
We conducted two varieties of an experiment. First, we left used method A. Second, we used method B.
Can I write this in the following way.
We conducted the experiment, first with method A and second with method B.
Or should it be like this (which seems strange to me)
We conducted the experiment, first, with method A, and second, with method B.