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首页> 外文期刊>cell and tissue research >The effect of age on the ultrastructure of the mid-gut cells of the hymenopteranNasonia vitripennis(Walk.) (Hymenoptera, Pteromalidae)
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The effect of age on the ultrastructure of the mid-gut cells of the hymenopteranNasonia vitripennis(Walk.) (Hymenoptera, Pteromalidae)

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The ultrastructure of the mid-gut cells of aged femaleNasonia vitripennisis described. The mid-gut is a shrunken and distorted organ in the aged animal. The individual cells are highly disorganised and the organelle components are altered. The small lipid droplets formed in the apical cell region do not coalesce to form the large central lipid inclusions characteristic of the young animal. The rough endoplasmic reticulum is reduced and some of the mitochondria enlarge. The mid- and apical cell regions also contain large numbers of cytolysosomes. The basal cell region is essentially unchanged, but the channels formed by the infolded basal plasma membranes are dilated. The changes observed are discussed in relation to previous observations on other insect species.

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