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Five common types of tumor tissue transplantation.
| Name | Definition |
|---|---|
| Autologous | transfer back elsewhere in the same animal |
| Homologous I | transfer to a tumor-bearing animal of the same species |
| Homologous II | transfer to a normal animal of the same species |
| Heterologous I | transfer to a tumor-bearing animal of a different species |
| Heterologous II | transfer to a normal animal of a different species |
