are perfecting
-estás perfeccionando
Present progressive conjugation of perfect. There are other translations for this conjugation.

perfect

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500+ learners.
The selection of the best embryos is the key to transferring a lower number and nowadays we are perfecting techniques to be able to reliably make this selection.
La selección de los mejores embriones es la clave para transferir un número menor y hoy en día estamos perfeccionando técnicas para poder realizar dicha selección de forma fiable.
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