has been culturing
Present perfect progressivehe/sheconjugation ofculture.

culture

Dr. Lida Mattman, who has been culturing cell wall deficient (CWD) organisms from blood for 40 years was contacted to culture specimens from 25 individuals diagnosed with Fibromyalgia Syndrome.
La Dra. Lida Mattman, quien ha estado cultivando organismos deficientes de pared celular de la sangre durante 40 años, fue contactada para cultivar el espécimen de 25 individuos diagnosticados con Síndrome de Fibromialgia.
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