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Teratoma Vs. Picture
The "Teratoma" is a boss from the "Wrath of the Lamb" expansion of "The Binding of Isaac". It can be commonly found in The Womb/Utero and acts similar to Fistula. it also acts like a posthumous version of the mentioned Fistula.

Physicall, it resembles a black mass of flesh with something that looks like teeth coming out of it.


  • In biology, a teratoma is a type of tumor that contains one of the three germ layers (Hair, teeth or bones). This teratoma exhibits the second one.

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