Organisms when come in contact with substances like allergens through eyes, skin, nose, gastrointestinal tract, respiratory tract etc. and produce reactions, they are called allergic reactions. Allergens can be swallowed, injected or breathed into the lungs. Occurrence of allergic reactions is very common. They may happen soon after an organism comes in contact with an allergen. These reactions may be mild or could be severe, life threatening even. They may be limited to specific area of a body or they may affect the entire body. The severest form of an allergic reaction is termed as anaphylaxis or anaphylactic shock. A person having a family history of allergies is more prone to suffer from such reactions. An initial exposure may produce only a mild reaction. But, a repetition of such conditions can lead to more serious reactions. Once an individual is sensitized, i.e. has had an exposure or allergic reaction, even a small amount of allergen or a very limited exposure can trigger a severe reaction.
Scientific journal is a periodical publication intended to further progress of science, usually by reporting novel research. Scientific journals contain articles that are peer reviewed, to ensure that articles meet the journal's standards of quality, and scientific validity. The publication of the results of research is an essential part of the scientific method. If they are describing experiments or calculations, they must supply enough details that an independent researcher could repeat the experiment or calculation to verify the results. Each such journal article becomes part of the permanent scientific record.
Last date updated on September, 2024
Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Portuguese 
Hindi