It's possible you've misheard or misspelled a term. Do you mean one of the following?

* Thrombocytes: These are another name for platelets, which are small, irregular-shaped cell fragments in the blood that play a crucial role in blood clotting.

* Erythrocytes: These are red blood cells, responsible for transporting oxygen throughout the body.

* Leukocytes: These are white blood cells, which form part of the immune system and fight off infections.

If you can provide more context or a different spelling, I may be able to help you identify the term you're looking for.