Mano masculina con sangre en un tubo de ensayo, concepto donación de sangre, primer plano - Foto e imagen de stock

Female hand holding test tube with blood

A young doctor, laboratory practitioner with a medical face mask and gloves, holding a test tube with blood sample, on a white background. Periodic blood test. Coronavirus test. A corona pandemic.

Doctor holding glass tube with blood sample indoors. Allergy test

Hand holding test tube with blood plasma ready for testing

Female hand with thermometer on laboratory background with test tube with blood inside, stethoscope, syringe, protective masks, concept of the danger of the spread of the virus and infection

Medical worker in gloves puts a sample for DNA analysis on a cotton swab in a glass test tube, the concept of scientific and medical examination, close-up

Laboratory assistant in gloves puts a sample for DNA analysis on a cotton swab in a glass test tube, concept of the danger of the spread of the virus 2019-nCOV, COVID-19

Medical laboratory test tube with the word coronavirus test on glass and blood inside, stethoscope, flasks, danger concept of the spread of the CoV virus

Doctor holds in his hand a laboratory test tube with liquid, does an analysis on COVID-19 against the background of a ventilator, the creation of a vaccine for the SARS-CoV-2 virus, coronavirus, flu

Medical laboratory test tube with blood in the hand of a virologist doctor, concept of virology, epidemic, spread of the CoV virus

Medical laboratory test tube with blood inside, stethoscope, syringe, protective masks, concept of the danger of the spread of the virus and infection

Gloved technician puts a sample for DNA analysis on a cotton swab into a glass test tube, a macromolecule spiral, a scientific and medical examination concept, close-up