<p>Well, many of the biologists at MIT work with yeast and bacteria, so dissections aren’t really necessary for them. </p>
<p>And I don’t know how much dissection PZ does – zebrafish are see-through, so you don’t need to dissect them to stain them for protein or RNA! 
Sometimes I think it would be nice to work with zebrafish or worms, because you would not believe the kind of trouble it is to remove the brain of a mid-gestation embryonic mouse.</p>