title: Evidence for a postnatal elimination of terminal arborizations and synaptic boutons of recurrent motor axon collaterals in the cat.
abstract: Triceps surae alpha motoneurons in cats of different postnatal ages were stained intracellularly with horseradish peroxidase (HRP). The recurrent axon collateral trees of the neurons were studied light microscopically. A large reduction of the number of axon collateral end branches and swellings, interpreted as synaptic boutons, was found to occur during the first two weeks of postnatal life.
mesh_terms: D000375:Aging; D000818:Animals; D001370:Axonal Transport; D001369:Axons / Q000502:physiology*; D002415:Cats; D006735:Horseradish Peroxidase; D009046:Motor Neurons / Q000502:physiology*; D024510:Muscle Development; D009132:Muscles / Q000294:innervation*; D010525:Peripheral Nerves / Q000254:growth & development*; D013569:Synapses / Q000502:physiology*
chemical_list: D006735:Horseradish Peroxidase