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Donald Thomas Campbell (November 20, 1916 – May 6, 1996) was an American social scientist. He is noted for his work in methodology . He coined the term evolutionary epistemology and developed a selectionist theory of human creativity .
Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death.
Grammatical Man: Information, Entropy, Language, and Life is a 1982 book written by Jeremy Campbell, then Washington correspondent for the Evening Standard. [1] The book examines the topics of probability, information theory, cybernetics, genetics, and linguistics.
Colloquially called "test-tube experiments", these studies in biology, medicine, and their subdisciplines are traditionally done in test tubes, flasks, Petri dishes, etc. [6] [7] They now involve the full range of techniques used in molecular biology, such as the omics. [8]
Human embryonic development or human embryogenesis is the development and formation of the human embryo.It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development.
The LD 50 ("Lethal Dose 50%") test is used to evaluate the toxicity of a substance by determining the dose required to kill 50% of the test animal population. This test was removed from OECD international guidelines in 2002, replaced by methods such as the fixed dose procedure , which use fewer animals and cause less suffering.
From 1957 to 1990 Campbell worked at Merck Institute for Therapeutic Research, [8] and from 1984 to 1990 he was a Senior Scientist and Director with Assay Research and Development. He became a US citizen in 1964. [9] One of his discoveries while at Merck was the fungicide thiabendazole, used to treat potato blight, historically a scourge of ...
Neil Allison Campbell (April 17, 1946 – October 21, 2004) was an American scientist known best for his textbook, Biology, first published in 1987 and repeatedly through many subsequent editions. The title is popular worldwide and has been used by over 700,000 students in both high school and college -level classes.