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<h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">Article of the Week - [[Adaptive_Immune_System_-_WikiBlood|Adaptive Immunity - WikiBlood]]</h2>
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<h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">Article of the Week - [[Oral_Cavity_-_Teeth_%26_Gingiva_-_Anatomy_%26_Physiology|Oral Cavity - Teeth and Gingiva]]</h2>
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Teeth develop differently in different regions of the mouth in most species, a process called heterodonty. In some animals teeth develop identically in different regions of the mouth, a process called homodonty. Different species will have varying numbers of teeth and different shapes depending largely on diet.
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Not all species possess teeth and there is huge variation in dental formulae between the species that have teeth. Teeth are mainly used for mastication - chewing and grinding food particles, but are also used for seizing prey and tearing. The occlusion surface is where opposing teeth touch. The contact surface is where adjacent teeth touch.
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Gingiva wrap around the neck of each tooth forming the gums. The gums are useful clinically in assessing health status of an animal.
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Adaptive immunity is a defense system built on specific cellular targeting. It takes time for the immune system to develop its weaponry (up to 96 hours after infection), but ultimately the adaptive response is far more effective because of its precision.
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[[Oral_Cavity_-_Anatomy_%26_Physiology_-_Flashcards#Teeth_.26_Gingiva_Flashcards|Test your dental knowledge using WikiCards]]
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Once infection is identified, antigen is transported to lymphoid organs where it is recognised by naive B and T cells. Clonal expansion and differentiation of these cells occurs, and then the battle begins. The immune system can take several tacks, depending on the type of infection encountered. Ultimately, the goals of the adaptive response are two-fold: to produce neutralizing antibody, and to flag up infected cells for destruction. This annihilation can be carried out by the cells of both innate and adaptive immunity.
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[[Oral_Cavity_-_Teeth_%26_Gingiva_-_Anatomy_%26_Physiology|Find out more about the Oral Cavity......]]
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[[Adaptive_Immunity_Flashcards_-_WikiBlood|Adaptive Immunity Flashcards]]
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