Teratoma formation services are typically offered by companies that specialize in providing researchers with stem cells for research purposes. Teratomas are tumors that contain multiple types of cells, including differentiated cells from various tissues. They can be formed by injecting pluripotent stem cells into immunocompromised mice.

Researchers use teratoma formation as a way to test the pluripotency of stem cells. By injecting stem cells into mice and allowing them to form teratomas, researchers can observe the types of differentiated cells that are present within the tumor. This can provide valuable information about the stem cells’ ability to differentiate into various cell types.

Companies that offer teratoma formation services typically provide researchers with a range of stem cell lines, including embryonic stem cells and induced pluripotent stem cells. They may also offer customized services, such as injecting stem cells at different stages of development or using specific mouse strains for the teratoma formation.

It is important to note that the use of stem cells in research is regulated and requires ethical considerations. Researchers must obtain appropriate ethical approvals and comply with regulations governing the use of animals in research.