• Nurse holds a coronavirus blood sample vial in her hand
  • Nurse holds injection syringe with blood sample vials
  • Injection syringe with vaccine bottles and blood sample vials
  • Blood vials with vaccine bottles and medicinal drugs on white background
  • Injection syringe with blood sample vials of patients
  • Blood sample vials on the palm of a hand wearing medical gloves
  • Healthcare worker holds blood sample vial at medical lab

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