A very good take on the theme. Definitely one of the most underrated games in this jam, Nice Work.
The artsyle and music were pretty great, Music actually played a major role as everything was timed to the music.
I did run into some problems though, Mostly just me getting stuck between objects in "white blood cell" stage and "Frog" stage or wouldn't be able to land properly in the "Frog" Stage, causing me to be stuck on the platform until the black void consumed me.
I also noticed that the fail state "Lose when >= 10 cancer cells" never triggered.
Next problem is that the game is very frame rate dependent. Movement, Arrow speed, Jump Velocity and the black void's movement speed increased with increase in frame rate.