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The tonsils are a [[Secondary Lymphoid Tissue - Anatomy & Physiology|secondary lymphoid tissue]] and [[Lymphocytes - Anatomy & Physiology#B cells|B cells]] in the tonsils become committed to synthesise IgA.
The tonsils are a [[Secondary Lymphoid Tissue - Anatomy & Physiology|secondary lymphoid tissue]] and [[Lymphocytes - Anatomy & Physiology#B cells|B cells]] in the tonsils become committed to synthesise IgA.
==In pathology==
==In pathology==
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[[Lymphoreticular/Haemotopoietic System - Tonsils|See here]]
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*[[Lymphoreticular/Haemotopoietic System - Tonsils|See here]]
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*[[Actinobacillus species#Actinobacillus pleuropneumoniae|Actinobacillus pleuropneumoniae]] in pigs may remain undetected by serological tests and swabbing in on the palatine tonsil