Monkey is the answer:
“Vero E6, which was given by Fort Detrick — a U.S. Army Medical Command installation— to BSL-4 in Wuhan. The Wuhan lab used Vero E6 to propagate SARS.
Vero E6 - monkey kidney cell line (that has SIV integrated in genome and produces infectious SIV virions). The cell line itself expresses HIV 120 and Gp41 allegedly found in the SARS-COV-2 virions.”
—Mikovits