Cell division

What you're seeing

1. A large, deeply ridged sphere in pink-grey, with dark red in its folds, fills the upper left against a blurred blue-grey field of clustered round shapes.
2. It shrinks as the camera pulls back, drifting to just right of the centre.
3. Next it appears left of centre with its outline pinched into a double form.
4. Two separate ridged spheres then drift apart, one towards the upper left and one towards the lower right corner.