Science Source December 1, 2009 DVD

Astrocytes in gray matter of cerebral cortex.

Choroid plexus; vascular structure responsible for production of cerebrospinal fluid (CSF).

Meninges; consisting of 3 layers of connective tissue enclosing the brain and spinal cord. Infection of the meninges causes meningitis.

Micrograph of the ventricle wall shows three layers: epicardium, myocardium, (composed of cardiac muscle), and endocardium.

Micrograph of the ventricle wall shows three layers: epicardium, myocardium, (composed of cardiac muscle), and endocardium.

Light micrograph of Purkinje fibers of heart muscle, which are specialized cardiac muscle fibers mediating the coordinated contractions of the pumping...

Light micrograph of Purkinje fibers of heart muscle, which are specialized cardiac muscle fibers mediating the coordinated contractions of the pumping...

Peyer's patches, oval masses of lymphoid tissue on mucous membrane lining of small intestine.

Light micrograph showing a longitudinal section of a tendon. Tendons are tough, flexible straps that connect muscles to bones or cartilage. They are t...

Light micrograph of the junction of muscle and tendon. Tendons are tough, flexible straps that connect muscles to bones or cartilage. They are the den...

Light micrograph of a muscle-tendon juncture in high magnification. Tendons are tough, flexible straps that connect muscles to bones or cartilage. The...

Finger clubbing, thickening of the tissues at base of the nail, seen in pulmonary tuberculosis, bronchiectasis, empyema, endocarditis, heart disease a...

Hepatitis sores on finger. Hepatitis is the inflammation of the liver caused by a viral infection (Hepatitis A, B, C, D or E).

Bulge in the abdomen due to an incisional hernia. A hernia is the protrusion of an organ or tissue through an abnormal opening.

Hemophiliac with bleeding into neck muscles. Hemophilia is a hereditary disorder that affects the clotting or coagulation of blood.

Symptoms of Factor VIII inhibition in the fingers of a patient with hemophilia A. Hemophilia is a hereditary disorder that affects the clotting or coa...

Typical brown discoloration of the hands caused by hemosiderosis. Hemosiderosis is an iron overload condition that results in the accumulation of hemo...

Gross specimen of a brain showing a midbrain hemorrhage.

Gross specimen showing a brain hemorrhage caused by high blood pressure.

Aortic valve with a tear in the aorta which produced aortic dissection. The aortic valve is a valve of the heart found between the left ventricle and...

Gross specimen of a heart with a myocardial infarct (heart attack) in the left ventricle. A heart attack is caused by the obstruction of the flow of b...

Heart with myocardial infarct (heart attack) and atrioseptal defect. An atrioseptal defect is a congenital heart defect characterized by an opening or...

Heart with myocardial infarct (heart attack) and atrioseptal defect. An atrioseptal defect is a congenital heart defect characterized by an opening or...

Benign prostatic hyperplasia (BPH), also known as nodular hyperplasia, and thickened bladder. BPH refers to the increase in size of the prostate in mi...

A large ovarian cyst after removal.

Ovary with an ovarian cyst.

Thoracic-lumbar angioma (masses of blood vessels). Angiomas can intrude into tissue or bone and cause structural weakening. In the spine, there is ris...

Brain angioma on the surface of the parietal lobe. Angiomas are masses of blood vessels. If severe, they can intrude into tissue or bone and cause str...

Surgically removed uterus with fibroma. Uterine fibroids are benign tumors that grow from the uterus's muscle layer.

Surgically removed uterus with fibroma. Uterine fibroids are benign tumors that grow from the uterus's muscle layer.

Hemangioma of the eye. A dense collections of dilated small blood vessels in the eye.

A lipoma removed from the trachea of a 50 year old man. Lipoma is a benign tumor of fatty tissue, usually occurring on the thigh, trunk or shoulder of...

Keloid on the shoulder of a patient. A keloid is an enlarged scar that grows beyond its original boundaries. It can itch, cause pain or be tender to t...

Hemangioma on sole of foot. Hemangiomas are benign vascular malformations in the skin that form during the first year of life and then recede over ove...

Operation in progress to remove a neurofibroma found on the spinal cord of this patient.

Congenital deformation of the outer ear.

Feet of adult with six toes on each foot.

Spider naevus. Spider naevi may be an indication of underlying disease, but can also occur in healthy individuals or in response to pharmacological ag...

A nerve sheath tumor (neurofibroma) in the lumbar spine.

Osteoclastoma or giant cell tumor, a type of bone cancer that usually affects the ends of the long bones

A polyp in a patient's larynx.

Specimen pin and lenseholder of Leeuwenhoek microscope, from front. Antonie Philips van Leeuwenhoek (1632 - 1723) is best known for his work on the im...

Leeuwenhoek microscope in use. Antonie Philips van Leeuwenhoek (1632 - 1723) is best known for his work on the improvement of the microscope and for h...

Leeuwenhoek microscope, c. 1650. Antonie Philips van Leeuwenhoek (1632 - 1723) is best known for his work on the improvement of the microscope and for...

Section of cork actually cut by Leeuwenhoek photographed in modern microscope. Antonie Philips van Leeuwenhoek (1632 - 1723) is best known for his wor...

Section of cork actually cut by Leeuwenhoek and photographed in modern times through one of his own microscopes. Antonie Philips van Leeuwenhoek (1632...

Specimen pin and lenseholder of Leeuwenhoek microscope, from front; close up of the lens. Antonie Philips van Leeuwenhoek (1632 - 1723) is best known...

Gregor Mendel's monastery in Brno, where he performed his genetics experiments.

The garden in Gregor Mendel's monastery in Brno, where he performed his genetics experiments.

Gregor Mendel's beehives at his monastery in Brno, where he performed his genetics experiments.