The link for the multi-material model is below. Although I have a palette 2 pro that allows me to print in multi-color, I didn't want to be limited by colors and potentially failed prints. So I cut up their model and modified some of the pieces to print and assemble easier. Additionally, this the small version of their larger print. I was able to print out a bunch of these for Biology students without using a ton of filament or printing time. 

To print this correctly, you'll have to insert some color changes for some of the pieces. The endoplasmic reticulum and golgi apparatus should have changes inserted at 0.60mm. The chloroplasts should have two color changes, at 3.20mm & again at 4.20mm. Since these are chloroplasts, make sure the thylakoids are green (4.20mm change). 

https://www.thingiverse.com/thing:2811554