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Close up. ampoule with a vaccine in the hands of a scientist. health concept.

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Close up. ampoule with a vaccine in the hands of a female scientist. science and health.

Close up .doctor in a protective mask standing in the laboratory. concept of health care.

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Close up. practicing doctor with a stethoscope in his hands on the background of the laboratory.

Close up. practicing doctor with a stethoscope in his hands on the background of the laboratory.

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Close up. portrait of a female scientist in a protective mask. science and health.