Biological chemistry
Biological chemistry: Another name for biochemistry — the study of the chemistry of living cells, tissues, organs and organisms. One of the premier journals of biochemistry today is the JBC, the Journal of Biological Chemistry, which was founded in 1905.
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- Biological therapy
Treatment to stimulate or restore the ability of the immune (defense) system to fight infection and disease. Biological therapy is thus any form of treatment that uses the body’s natural abilities that constitute the immune system to fight infection and disease or to protect the body from some of the side effects of treatment. Biological […]
- Biomarker
Biomarker: A biologic feature that can be used to measure the presence or progress of disease or the effects of treatment. For example, prostate specific antigen (PSA) is a biomarker for cancer of the prostate.
- Biopsy
Biopsy: The removal of a sample of tissue for examination under a microscope to check for cancer cells or other abnormalities.
- Biopsy, excisional
Biopsy, excisional: A surgical procedure in which an entire abnormal area is removed for diagnostic examination under a microscope.
- Biopsy, punch
Biopsy, punch: A biopsy that is performed by using a punch, an instrument for cutting and removing a disk of tissue. For example, a punch biopsy of the skin may be done to make a diagnosis of skin cancer.