...Catherine Magill-Solc; U. J. McMahan ABSTRACT Several lines of evidence indicate that agrin, or a protein very similar to it, directs the formation and maintenance of the postsynaptic apparatus at the neuromuscular junction. We discuss the results of studies involving immunohistochemical...

... and acetylcholinesterase on regenerating muscle fibres. Agrin, which is extracted from basal lamina-containing fractions of the Torpedo electric organ and causes the formation of acetylcholine receptor and acetylcholine esterase aggregates on cultured myotubes, may be similar, if not identical, to the acetylcholine...