Type I hypersensitivity

Type I hypersensitivity (or immediate hypersensitivity) is an allergic reaction provoked by reexposure to a specific type of antigen referred to as an allergen. Type I is not to be confused with Type II, Type III, or Type IV hypersensitivities.

Exposure may be by ingestion, inhalation, injection, or direct contact.

单词	Immediate hypersensitivity
释义	Immediate hypersensitivity 英语百科 Type I hypersensitivity Type I hypersensitivity (or immediate hypersensitivity) is an allergic reaction provoked by reexposure to a specific type of antigen referred to as an allergen. Type I is not to be confused with Type II, Type III, or Type IV hypersensitivities. Exposure may be by ingestion, inhalation, injection, or direct contact.
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Immediate hypersensitivity

Type I hypersensitivity