Changes

* May occur in a variety of conditions.

* May occur in a variety of conditions.

** Is particularly seen in viral conditions of epithelial tissue.

** Is particularly seen in viral conditions of epithelial tissue.

* [[Cavity & Gingiva - Pathology#Foot and Mouth disease|Foot and Mouth Disease]] is the best example.  

* [[Foot and Mouth Disease|Foot and Mouth Disease]] is the best example.  

** Foot and Mouth virus attacks the stratum spinosum of the epithelium of the [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] and feet.  

** Foot and Mouth virus attacks the stratum spinosum of the epithelium of the [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] and feet.  

** Affected cells balloon up with water containing the replicating virus, swelling until they burst.  

** Affected cells balloon up with water containing the replicating virus, swelling until they burst.