In the model, this is the grape. Cell membrane close cell membraneThis surrounds the outside of animal cells and controls what can enter and exit it.: In the model, this is the balloon.

"These cells co-develop together, just like they would in an actual embryo, and establish that history of being neighbors," ...

Also, animal models are often preferable for ... The mouse ascending: Perspectives for human-disease models. Nature Cell Biology 9, 993-999 (2007) doi:10.1038/ncb437 (link to article) Wolfgang ...