This is a unique and very experimental idea for a game! I do love how you've taken something very minute and turned it into game mechanics without text or guidance, so the player's experience is very much self-guided. I think the biological visuals are done very well, with some great layered effects and physics with the cells going the other way down the bloodstream. I think that this is a game that is short and sweet, so I'm not feedback I can give other than a tweak to the 'game over' screen.
Good job!
Thanks for submitting Myeloid to the SCREAM LITE jam!