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KMID : 0352519900270030813
Korea Univercity Medical Journal
1990 Volume.27 No. 3 p.813 ~ p.821
Histopathological Study of the Middle ear Mucosa and Formation of Cholesteatoma after Middle ear instillation of Propylene Glycol in Guinea pig


Abstract
Nucleolar organizer regions(NORs) are loops of DNA which possess r-RNA genes, ulti¡©mately direct ribosome and protein formation. Thus, the numbers of NORs in nuclei appear to reflect their state of activation.
The correlation between the cellular activity
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