Red Blood Cell Animation

My Oxy, and De-oxy blood cell spins I have kept as the same animation, in the same angles, but with the de-oxy's frames moving backwards in the coding, so they look like they've been hit in a different direction. Originally I was going to vary the spin of the blood cells, so they rotate from more than one angle, but I have realised that this would just take up much more space in the iphone game, by using more frames and will be more tricky to match up the angles. To be honest I don't think it is needed as once the blood cells increase in size as they get closer to you in their different angles, I think it will give an illusion that they are spinning in more than one direction than just one.