Another enigma concerns the Burkitt's type of lymphoma, which can produce grotesque tumors of the face and neck.

Few centres are specializing in hormone producing tumors only, due to the relatively low incidence.

In other women, the abnormal cells are transformed into cancer cells, producing invasive tumors of the cervix.

The reasoning is that high doses will more reliably produce tumors or other effects in statistically significant numbers.

Malignant lymphomas of the gastrointestinal tract can produce large tumors with significant ulceration and bleeding.

Neurofibromatosis, the "Elephant Man's disease" that can produce grotesque tumors, was linked to a place close to the center of chromosome 17.

But it does not normally produce tumors as do many types of cancer.

Merely because chemicals or certain foodstuffs produce tumors in rodents does not mean that humans will be harmed.

They grew vegetables and roots by splitting cells so that the plants produced only shapeless tumors of edible material.

They showed that cigarette smoke could not only produce tumors on animal skin but cause other serious health problems as well.