***Antibodies directed against acetyl choline receptors
***Antibodies directed against acetyl choline receptors
−
**Associated with [[Lymphoreticular/Haemotopoietic system - general pathology#Tumours of the Thymus|thymomas]], [[Oesophagus - Pathology#Congenital Achalasia - Megaoesophagus|megaoesophagus]] and dysphagia
+
**Associated with [[Thymus - Pathology|thymomas]], [[Oesophagus - Pathology#Congenital Achalasia - Megaoesophagus|megaoesophagus]] and dysphagia
**In adult dogs
**In adult dogs
*'''Congenital'''
*'''Congenital'''
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**Non-specific muscle [[Muscles Degenerative - Pathology#Atrophy|disuse atrophy]] and fibrosis or no changes on histology
**Non-specific muscle [[Muscles Degenerative - Pathology#Atrophy|disuse atrophy]] and fibrosis or no changes on histology
*Both forms manifest as weakness which worsens on exercise
*Both forms manifest as weakness which worsens on exercise