BioScience Dictionary

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Found Tumor 5 times.

Displaying results 1 to 10.

1. Tumor
An abnormal mass of undifferentiated cell s within a multicellular organism. They can interfere with vital body functions and absorb nutrients needed elsewhere. They can be malignant (cancerous), which means they will grow rapidly and spread to other parts of the body or cause more tumors to form elsewhere, or be benign, which means that they will generally grow much more slowly and stay put in one area.

2. Tumor markers
Tumor markers are proteins found in blood the levels of which correlates with the type and activity of some cancer s. Some tumor markers are antigen s, others are enzyme s. Some common tumor markers are: * carcinoembryonic antigen (CEA) * prostate-specific antigen (PSA) * prostatic acid phosphatase (PAP) * CA 125 * alpha-fetoprotein (AFP) * human chorionic gonadotropin (HCG) * lactate dehydrogenase (LDH) * neuron-specific enolase * carbohydrate antigen 15-3 * carbohydrate antigen 19-4 * cathepsin D .

3. Tumor suppressor genes
Genes that normally keep cell division under control, preventing the cell from responding to internal and external commands to divide.

4. Tumor virus
A virus capable of transforming a cell to a malignant phenotype .

5. Tumorigenic
This adjective is applied to anything which causes tumor formation.

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