/sci/ - Science & Math

I'm not sure if I should put this here or on /adv/.

I applied to a PhD in Bio and I've been invited to visit their campus. They're comping everything, which I'm guessing is a good sign. My old profs told me it means I'm one of the few they're considering.

My problem is that I really fucked up my ungrad. However I did awesome post-bac and got high 90's on my GREs and that's what I'm guessing put me over the top.

I know I'm still competing against the others I'll be meeting there and I need to know what's going to help me outshine all of them. I don't really know what to expect, I haven't done too many interviews in the past, and none that I actually cared about.

Some things I'm already doing:
background research on the school's program
reading papers written by the professors
reading more papers in my area of interest

What else can I do to prep myself?