Abstract Background Congenital myasthenic syndromes (CMSs) are a group of inherited disorders of neuromuscular transmission that may be presynaptic. synaptic. or postsynaptic. Causative mutations have been identified in 4 breeds including the Labrador Retriever. https://www.roneverhart.com/Chateau-d-Esclans-Whispering-Angel-Rose-2020-375ml-6-Bottle-Case/