Absolutely incredible presentation! I love the vibe of the blood stream and everything being blue and all the little particulates floating around and whatnot!
The dragging around of cells is annoyingly slow until you realize that the speed depends on how far away the mouse is, so the optimal strat is to drag your mouse as far as it goes, to the edge of the screen :D
It should probably be normalized to something inbetween :)
The game concept is also great, I love how you have to let the blood cells pass, and also that they're your currency as well, all while you can hurry them along if you need to :D combined with movable turrets is really interesting!
I'm a little unsure as to what the trio were supposed to do, they seemed a little useless, and I ended up just spamming the big 5-cost ones.
But otherwise, extremely impressive!