***Antibodies directed against acetyl choline receptors
***Antibodies directed against acetyl choline receptors
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**Associated with [[Lymphoreticular/Haemotopoietic system - general pathology#Tumours of the Thymus|thymomas]], [[Oesophagus#Congenital Achalasia - Megaoesophagus|megaoesophagus]] and dysphagia
+
**Associated with [[Lymphoreticular/Haemotopoietic system - general pathology#Tumours of the Thymus|thymomas]], [[Oesophagus - Pathology#Congenital Achalasia - Megaoesophagus|megaoesophagus]] and dysphagia