A study published in the journal Nature revealed the world's first lab-grown mini-stomachs that were build using pluripotent stem cells . The lab-grown stomachs are tiny clusters of human gastric tissue called gastric organoids. They are a mini-version of the stomach developed from stem cells that have the ability to be differentiated or give rise to cells with different functions. According to the researchers the stem cells were coaxed to develop into gastric cells to build mini-stomachs. Stem cell research has always encountered difficulties led by the challenge of getting cells to 'differentiate' or become cells for specific organs. for