Mathematical Biology?

I'm currently in my 3rd year and am a double major in genetics and math. So far for math, I have been taking the courses that are required of both pure and applied math majors (real ysis, abstract algebra, numerical ysis, etc) so I haven't yet decided whether I want to do pure math or applied math. I was originally only planning to be a genetics major, but after working a year in a biochemistry lab I found I couldn't stomach working with bodily fluids and chemicals as a career after college. I still find genetics to be very exciting, when I am sitting in front of a book. I know what mathematical biology means from Wiki, but what I wish to know is whether a mathematical biology lab similar to that of a biochemistry lab (with mice gore and stuff) or is it a more sterile environment with only computers and machines here and there? Otherwise I might just do either pure or applied math in econ or actuarial science.