immediate hypersensitivity
noun
plural immediate hypersensitivities
: hypersensitivity in which exposure to an antigen produces an immediate or almost immediate reaction
Cite this Entry
“Immediate hypersensitivity.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/immediate%20hypersensitivity. Accessed 4 Jul. 2025.
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