In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.

Q: La envoltura de los retrovirus procede de la (el)

A: The retrovirus envelope comes from (the)
****
Q: Una proteina conjugada es

A: A conjugated protein is
****
Q: Los filtros de vidrio poroso de 10-40m se emplean de modo especial en

A:
Porous glass filters of 10-40m are used in particular in
****