Terrific insight. My daughter was accepted (Fall 2020) into toxicology but also considering immunology and biotechnology, all very similar. Agree on picking a major now feels early, but will certainly look at each path and their respective requirements with an advisor closely.
Daughter emailed an advisor in Eberly and she highlighted the fact that regardless of whatever major/college you start in, keep sight of other majors/colleges you might want to get in to and don’t fall behind on key classes, which is also terrific advice.