Animation Matte Paintings/ Background Textures

During my animation the action goes through numerous background changes through camera tracks/pans. These background changes act to serve as transitions between the different phases of the cell cycle.
These backgrounds also serve to express the stylisation of a world that would otherwise be unable to film due to the artificiality of it.
I have produced my background environments fully in photoshop and these will be fixed to planes in my animation to simulate the cells moving through this graphic design based human body.

G1 Phase & ending

G1 Checkpoint

Prophase

Anaphase

S Phase, Prometaphase, Metaphase & Telophase