Photo Researchers ftp March 2011

Tongue cancer. Light micrograph of a section through a tongue with squamous cell carcinoma (SSC). SCC arises from the uncontrolled proliferation of sq...

Thyroid cancer. Light micrograph of a section through a thyroid gland with papillary adenocarcinoma, the most common form of thyroid cancer. Adenocarc...

Parathyroid gland adenoma. Light micrograph of a section through an adenoma, a benign (non-cancerous) tumour, in the parathyroid gland. The adenoma ce...

Parathyroid gland adenoma. Light micrograph of a section through an adenoma, a benign (non-cancerous) tumour, in the parathyroid gland. The adenoma ce...

Blister. Light micrograph of a section through a bulla, or blister. This is an accumulation of fluid and inflammatory cells (raised area at right) ben...

Adrenal hyperplasia. Light micrograph of a section through an adrenal gland with nodular hyperplasia, a proliferation of cells that cause it to become...

Thyroid cancer. Light micrograph of a section through a thyroid gland with follicular carcinoma, a form of thyroid cancer. The cause of thyroid cancer...

Penile skin cancer. Light micrograph of a section skin from the glans penis showing squamous cell carcinoma in-situ, also known as Erythroplasia of Qu...

Pituitary tumour. Light micrograph of a section through a pituitary gland (purple and light purple, centre) showing an adenoma (mass at bottom left),...

Thyroid gland. Light micrograph of a section through a healthy thyroid gland showing the follicles (large cells). The follicles are lined by a single...

Thyroid nodule. Light micrograph of a section through a thyroid gland with a colloid adenoma, or nodule (centre). The nodule is filled with colloid, a...

Thyroid nodule. Light micrograph of a section through a microfollicular adenoma, or nodule, in a thyroid gland. The nodule is filled with small close...

Thyroid nodules. Light micrograph of a section through a thyroid gland with colloid adenomas, or nodules (botom right and upper left)). The nodules ar...

Thyroid cancer. Light micrograph of a section through a thyroid gland with follicular carcinoma, a form of thyroid cancer. The invasion of blood vesse...

Thyroid cancer. Light micrograph of a section through a thyroid gland with anaplastic carcinoma, a form of thyroid cancer that is most common in the v...

Adrenal cortex. Light micrograph of a section through a healthy adrenal cortex (dark purple). The adrenal glands are found on top of the kidneys. They...

Adrenal gland tumor. Light micrograph of a section through an adrenal gland containing a cortical adenoma (dark spherical mass at left). Adenomas are...

Neuroblastoma. Light micrograph of a section through a malignant (cancerous) tumour, showing tumour cells (dark purple) in typical rosette-shaped arra...

Thickened skin. Light micrograph of a section through skin that displays parakeratosis. This is a thickening of the keratinized (hardened) surface lay...

Small blister. Light micrograph of a section through the skin showing a vesicle (white area, upper centre), or small blister. This is an accumulation...

Pustule. Light micrograph of a section through the skin showing a pustule (light purple area). This is an accumulation of neutrophil white blood cell...

Ovarian tumour. Light micrograph of a section through a benign (non-cancerous) teratoma in an ovary. Teratomas are tumours derived from germ cells (sp...

Hodgkin's disease. Light micrograph of a section through a lymph node affected by nodular sclerosing pattern Hodgkin's disease. Hodgkin's disease, or...

Hodgkin's disease. Light micrograph of a section through a lymph node affected by lymphocyte-predominant pattern Hodgkin's disease. Hodgkin's disease,...

Glomerulonephritis. Light micrograph of tissue from a kidney in a case of glomerulonephritis. This condition refers to inflammation of the glomeruli,...

Hypertensive kidney. Light micrograph of a section through a kidney damaged by benign hypertensive nephrosclerosis. The kidney has been damaged as a r...

Kidney infection. Light micrograph showing a section through a kidney infected by bacteria. Here the infection has reached the pelvis (pyelum) of the...

Kidney cancer. Light micrograph of a section through a malignant (cancerous) tumour in the pelvicalyceal system of the kidney. This is a transitional...

Lymph node hyperplasia. Light micrograph of a section through a lymph node showing paracortical hyperplasia. Hyperplasia is the abnormal proliferation...

Hodgkin's disease. Light micrograph of a section through a lymph node affected by mixed cellularity pattern Hodgkin's disease. Hodgkin's disease, or H...

Bone marrow leukemia. Light micrograph of a section through bone marrow from a patient with chronic lymphocytic leukemia (CLL). The bone marrow is see...

Spleen in myelofibrosis. Light micrograph of a section through a spleen that has become enlarged (splenomegaly) as a result of myelofibrosis of bone m...

Myeloma blood cancer. Light micrograph of a section through bone marrow affected by myeloma. Myeloma is a cancer of plasma cells, a type of white bloo...

Lichen sclerosus. Light micrograph of a section through skin affected by lichen sclerosus et atrophicus (LS). LS is an uncommon disease of unknown cau...

Skin cancer. Light micrograph of a section through skin affected by squamous cell carcinoma (SCC). This cancer is affecting the vulva of the female ge...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Lichen planus. Light micrograph of a section through skin affected by lichen planus, a clinically and histologically distinct form of dermatitis. The...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Psoriasis. Light micrograph of a section through skin affected by psoriasis, a chronic skin disease causing inflammation and scaly lesions. The surfac...

Lichen planus. Light micrograph of a section through the epidermis (upper layer) of skin affected by lichen planus, showing hyperkeratosis (flaky), an...

Chronic dermatitis. Light micrograph of a section through skin affected by chronic dermatitis, showing the boundary between the epidermis (dark pink)...

Chronic dermatitis. Light micrograph of a section through skin affected by chronic dermatitis, showing the boundary between the epidermis (dark pink)...

Chronic dermatitis. Light micrograph of a section through skin affected by chronic dermatitis, showing the characteristic thickening (acanthosis) of t...

Viral wart. Light micrograph of a section through a wart caused by a virus in a person's skin, showing the exophytic papillary form. The epidermis (mi...

Viral wart. Light micrograph of a section through a wart caused by a virus in a person's skin, showing the exophytic papillary form. The epidermis (da...