ACETYL-CHOLINE-RECEPTOR-ANTIBODIES (AChR Antibodies) Acetyl Choline Receptor Antibodies (AChR antibodies) are autoantibodies produced by the immune system that mistakenly attack acetylcholine receptors present at the neuromuscular junction. These receptors play a crucial role in transmitting nerve signals to muscles, enabling normal muscle contraction and movement. The presence of AChR...