I'm an INTP in biochemistry and loving it. There is *some* math, but a lot of the work I do is very conceptual. We have Viral Protein 3, which *might* have a functional Nuclear Export signal (a series of repeated hydrophobic amino acids). To test whether VP3 has an NES we are going to fuse the VP3 gene with the gene for Green Fluorescent Protein. We'll dump the VP3-GFP hybrid into cells, and simply look to where the the little green dots clump. The end result will be something simple-looking like this, but has a lot of theory to understand behind it.
Also... it takes a fair amount of lab work to combine the VP3 & GFP genes. But you need good understanding of the science to make sure your procedures go correctly, and if you have problems with the procedures you can tweak them based on the theory and how your reagents vary from the average reagents.
Here's a picture of a type of cell that has multiple nucleuses. Unrelated to my research, the research they're doing is just about cells with multiple nuclei... or something like that. I just grabbed a pretty picture.
Here's another great picture of a neuron expressing GFP.
http://www.greenspine.ca/media/mGFP_neuron2.jpg