A doctor or scientist in the lab is holding a stethoscope to listen to heart beats of the heart. Concept: disease, cure heart attacks, science, futuristic, heart and science. - Stock Photo & Image

A doctor or scientist in the lab is holding a stethoscope to listen to heart beats of the heart. Concept: disease, cure heart attacks, science, futuristic, heart and science.

A doctor or scientist in the lab is holding a stethoscope to listen to heart beats of the heart. Concept: disease, cure heart attacks, science, futuristic, heart and science.

A doctor or scientist in the lab is holding a stethoscope to listen to heart beats of the heart. Concept: disease, cure heart attacks, science, futuristic, heart and science.

Doctor with stethoscope in emergency room lighting environment selective focus

Close up portrait of a surgeon or doctor with mask and headset ready for operation in hospital or clinic. The surgeon smiles safe and proud of himself. Concept of medicine, hospitals and doctors, care

Male surgeon with syringe in hands

Close up portrait of woman doctor with stethoscop ready for visit in hospital or clinic.

Close up portrait of woman doctor with stethoscop ready for visit in hospital or clinic.

A doctor or scientist in laboratory holding a syringe with liquid vaccines for children or older adults, or cure animal diseases. Concept:diseases,medical care,science, anesthesia,euthanasia,diabetes.

A portrait of a doctor or surgeon in a medical mask, a respirator, a stethoscope, in a hospital or a clinic. Concept: the first medical help, to help treat people, operations, doctors, hearts, lungs.

Close up portrait of a surgeon or doctor with mask and headset ready for operation in hospital or clinic. The surgeon smiles safe and proud of himself. Concept of medicine, hospitals and doctors, care

Close up portrait of a surgeon or doctor with mask and headset ready for operation in hospital or clinic. The surgeon smiles safe and proud of himself. Concept of medicine, hospitals and doctors, care