Biologic evolution
Biologic evolution: Biologic evolution was contrasted with cultural (social) evolution in 1968 by A.G. Motulsky who pointed out that biologic evolution is mediated by genes, shows a slow rate of change, employs random variation (mutations) and selection as agents of change, new variants are often harmful, these new variants are transmitted from parents to offspring, the mode of transmission is simple, complexity is achieved by the rare formation of new genes by chromosome duplication, biologic evolution occurs with all forms of life, and the biology of humans requires cultural evolution.
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- Biological response modifiers
Biological response modifiers: Substances that stimulate the body’s response to infection and disease. The body naturally produces small amounts of these substances. Scientists can produce some of them in the laboratory in large amounts for use in treating cancer, rheumatoid arthritis, and other diseases. BMRs used in biological therapy include monoclonal antibodies, interferon, interleukin-2 (IL-2), […]
- 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.
- 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.