Royalty free Slike An image showing a number of transparent pill capsules containing strands of DNA.

Royalty free Slike A posterolateral view (left side) of the brainstem relative to the brain. The cerebral nuclei are i

Royalty free Slike Angioplasty is the mechanical widening of a narrowed or totally-obstructed blood vessel. A balloon c

Royalty free Slike A superior anterolateral view of the left breast. Illustration dipicting cancer in glandular tissue

Royalty free Slike A lateral view (left side) of the respiratory system relative to the ribcage.

Royalty free Slike An anterolateral view (left side) of the lower leg affected by the skin disease pyoderma gangrenosum

Royalty free Slike An anterior view of the pancreatic duct. The stomach has been removed.

Royalty free Slike A magnified conceptual visualization of multiple coccus bacteria on a cellular surface.

Royalty free Slike A stylised scanning electron microscopic image of the rod shaped bacteria Bacillus anthracis.

Royalty free Slike An anterior view of the digestive system. The urinary system and prostate gland are included.

Royalty free Slike Candida albicans is a diploid asexual fungus (a form of yeast). It causes oral and genital infection

Royalty free Slike A stylised scanning electron microscopic image of the avian flu virus.

Royalty free Slike An adult female mosquito piercing skin.

Royalty free Slike An anterolateral view (right side) of the brain.

Royalty free Slike An anterolateral view (right side) of the brain. The brainstem and cerebral nuclei are included.

Royalty free Slike A scanning electron image of red and white blood cells.

Royalty free Slike A posterior view of the vertebral column. The cervical, thoracic lumbar and sacral vertebrae are hig

Royalty free Slike An anterolateral view (left side) of the muscles of the chest and upper arm relative to the skeleton

Royalty free Slike A mast cell contains many granules rich in histamine and heparin. It has roles in allergy and anaphy

Royalty free Slike A microscopic view of sperm fertilising an ovum.

Royalty free Slike An inferior posterolateral view (left side) of the skeletal system. The surface anatomy of the body

Royalty free Slike An anterior view of the muscles of the left shoulder and upperarm.

Royalty free Slike A stylised view of a stem cell surrounded by red blood cells.

Royalty free Slike An image of various types bacteria and viruses.

Royalty free Slike Asthma is a chronic disease of the respiratory system in which the airway occasionally constricts an

Royalty free Slike An anterior view of the blood vessels of the upper body.

Royalty free Slike A superior anterior view of the blood supply of the trunk. The surface anatomy of the body is semi-t

Royalty free Slike An anterolateral view (right side) of the digestive system relative to the skeleton and vascular sys

Royalty free Slike An inferior, anterolateral view (left side) of the liver relative to the digestive system.

Royalty free Slike A stylised image showing a segement of a strand of DNA. DNA contains the genetic instructions for th

Royalty free Slike The needle of a syringe with drops of blood below it.

Royalty free Slike A midsagittal section of the head and neck.

Royalty free Slike An anterior view of the heart. The coronary blood vessels are also included.

Royalty free Slike An anterior view of the urinary system and blood supply of the upper body relative to the skeleton.

Royalty free Slike An anterolateral view (right side) of the upper digestive system, pancreas and gall bladder, The ki

Royalty free Slike An anterior view of the respiratory system. The bronchial tree is also visible.

Royalty free Slike An anterolateral view (right side) of the bones of the head, neck and face.

Royalty free Slike A lateral view (right side) of the vertebral column.

Royalty free Slike A stylised view of red and white blood cells. Platelets and fibrin are also included.

Royalty free Slike An anterior view of the blood supply of the upper body. The surface anatomy of the body is semi-tran

Royalty free Slike A posterior view of the brainstem. The cerebral cerebral nuclei are also included.

Royalty free Slike An anterior view of the blood supply of the kidneys.

Royalty free Slike A scanning electrom microscopic image of HIV. The glycoprotein complex on its surface enables the vi

Royalty free Slike Sectional anatomy of the ear. The external, middle and inner ear are shown.

Royalty free Slike Metastasis is a complex series of steps in which cancer cells leave the original tumor site and migr

Royalty free Slike A scanning electron microscopic image of a cancer cell and its processes on a cellular surface.

Royalty free Slike A lateral view of the vertebral column.

Royalty free Slike A lateral view (right side) of the brainstem relative to the brain. The cerebral nuclei are included