Adverse selection occurs in health insurance when there is an imbalance of high-risk, sick people to healthy people. The imbalance can happen due to sick people, who require more insurance, using more ...

Clonal selection is a process proposed to explain how a single B or T cell that recognizes an antigen that enters the body is selected from the pre-existing cell pool of differing antigen ...

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What was revolutionary about the clonal-selection theory as a solution to the specificity-of-antibody problem? N. Av Mitchison. Biology in the 1950s was coming to terms with 'DNA and all that'. We saw ...