The graphics are lovely. It's not possible to draw everything accurately and have it make sense to everyone; the animators did a good job picking and choosing how and what to illustrate.
Word of caution, though, to all those who think think the modulation of angiogenesis is 'the key to cancer'--pay attention to the phrases such as 'may be'. It really 'may be', but those are also the things that are definitely not guaranteed.