Neuromuscular junction in myasthenia gravis, illustration - stock illustration

Illustration of a neuromuscular junction in a patient with the autoimmune disease myasthenia gravis. Autoantibodies (red) are attached to acetylcholine receptors (blue) on the muscle's membrane, blocking the uptake of acetylcholine molecules (yellow) and therefore preventing signal transmission. Myasthenia gravis results in muscle weakness and fatigue that most commonly affects the eyes and face