title: The cytological effect of ecdysterone on the midgut cells of the flesh-fly Sarcophaga bullata.
abstract: Larvae of the flesh-fly, Sarcophaga bullata, were injected with the synthetic moulting hormone ecdysterone or saline at the beginning of the third and final larval instar. One group was left untreated. The ecdysterone-injected larvae showed an increase in number of secondary lysosomes in the midgut epithelial cells similar to that observed at the onset of metamorphosis, an event which would normally occur about 48 hr later in these larvae.
mesh_terms: D000135:Acid Phosphatase / Q000032:analysis; D000818:Animals; D002467:Cell Nucleus / Q000187:drug effects; D002776:Cholestanes / Q000494:pharmacology*; D003593:Cytoplasm / Q000187:drug effects; D004175:Diptera; D004848:Epithelium / Q000187:drug effects; D006651:Histocytochemistry; D007422:Intestines / Q000166:cytology* / Q000187:drug effects / Q000201:enzymology; D007447:Invertebrate Hormones; D007814:Larva; D008247:Lysosomes / Q000187:drug effects* / Q000201:enzymology; D008675:Metamorphosis, Biological; D008854:Microscopy, Electron; D008928:Mitochondria / Q000187:drug effects; D013997:Time Factors
chemical_list: D002776:Cholestanes; D007447:Invertebrate Hormones; D000135:Acid Phosphatase