Foto de stock - 23 February 2021, Baden-Wuerttemberg, Heidelberg: A member of staff fills the throat rinsing solution from a dropper bottle into a test tube during a gargle test in a laboratory at the Centre for Molecular Biology at Heidelberg University. The University of Heidelberg offers gargle tests for students. Photo: Uwe Anspach/dpa. - Heidelberg/Baden-Wuerttemberg/Germany

Imagen: 23 February 2021, Baden-Wuerttemberg, Heidelberg: A member of staff fills the throat rinsing solution from a dropper bottle into a test tube during a gargle.

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