Prueba positiva y negativa de Covid-19 y muestra de laboratorio de sangre - Metraje y vídeo de stock
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A doctor is signing covid-19 test tubes negative. An covid-19 virus perception operation
Laboratory technician testing corona virus , COVID 19 test
Doctor with blue glove and the syringe with the blood sample
4K, Protective mask and positive COVID-19 test. Laboratory sample of blood testing for diagnosis new Corona virus infection. Disease 2019 from Wuhan. Pandemic infectious concept-Dan
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