The brain stem auditory system of the chick is an advantageous model for examining changes that occur as a result of deafness. Elimination of acoustic input through cochlear ablation results in the eventual death of approximately 30% of neurons in the chick cochlear nucleus. nucleus magnocellularis (NM). One early change following deafness is an alteration in NM ribosomes. https://cosmeticssquadets.shop/product-category/hand-tool-sets/