More Beauty in Science
These are some of my favorite movies.
The Drosophila (fruit fly) embryo syncytial divisions. This is an embryo from a line expressing a green flourescent protein attached to the tubulin protein - so you can see microtubules and mitoses.
Here's a couple stills of an early developing embryo
And then the movies....
They are all perfectly synchronized and are mesmerizing.
Taken from here. (with a higher quality video & lots more info)
And another example with a different protein labeled:
Taken from here.