El científico sostiene un ratón blanco de laboratorio en su mano. SARS-CoV-2, Chinas Nuevo concepto de desarrollo y pruebas de vacunas contra el Coronavirus. - Foto e imagen de stock

Dambo rat on the hands of a veterinarian on a white isolated background. The hands of the vet in gloves.

A small white laboratory mouse with red eyes in the hand of a scientist in a blue rubber glove. Woman puts experiments on a laboratory mouse.

A small white laboratory mouse with red eyes in the hand of a scientist in a blue rubber glove. Woman puts experiments on a laboratory mouse.

A small white laboratory mouse with red eyes in the hand of a scientist in a blue rubber glove. Woman puts experiments on a laboratory mouse.

A small white laboratory mouse with red eyes in the hand of a scientist in a blue rubber glove. Woman puts experiments on a laboratory mouse.

Veterinarian woman holding a rat.

A lab rat sits among the covid vaccine and pills and closes its eyes because it does not believe animal testing is over

White rat with medicines on a white background close-up. Scientific research on animals, tablet testing. Scientific laboratory for experiments.

The veterinarian holds a rat in protective gloves and, with a stethoscope, listens to its heartbeat. The girl is wearing a light yellow turtleneck and a medical gown. She has blond hair down. The girl

A close shot of a white rat being held by a veterinarian wearing blue gloves. An animal with black eyes, long white mustaches, small white paws sits on the doctors arms and looks at the camera. Focus

A close-up photo of a white rat being held by a veterinarian wearing blue gloves. An animal with black eyes, long mustaches, small white paws sits on the doctors arms and looks at the camera. Focus

Laboratory rat sits on a white background surrounded by different pills and ampoules and looks at the camera

The veterinarian holds the rat in protective gloves and uses a stethoscope to listen to its heartbeat. The girl is wearing a light yellow turtleneck and a medical gown. She has blonde hair down. The