Construct · 2 fields · 2 citations
One name. Different field. Different construct. One map.
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In physiology, humoral means carried by the blood: humoral regulation is control exerted by chemical messengers released into the circulation, such as hormones, as opposed to direct nervous control, so a humoral mechanism acts at a distance through a blood-borne agent. Grossman, Robertson, and Ivy's 1948 Proof of a hormonal mechanism for gastric secretion demonstrated such humoral transmission of a stimulus. The referent is blood-borne chemical control, a construct that kept the old root meaning of fluid but sheds the four-humour theory, and it is separate from antibody-mediated immunity despite sharing the adjective.[1]
In immunology, humoral immunity is the arm of adaptive defence mediated by antibodies and other soluble factors circulating in blood and lymph, as contrasted with cell-mediated immunity carried by T cells, the historic distinction between protection you can transfer with serum versus with cells. Casadevall and Pirofski's 2006 A reappraisal of humoral immunity based on mechanisms of antibody-mediated protection against intracellular pathogens revisits how this soluble-factor defence works. The referent is antibody-based, serum-transferable immunity, a construct distinct from the four-humour theory or blood-borne hormonal control, inheriting only the word's root meaning of the body's fluids.[2]
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