Abstract:
:Restriction Endonucleases (REs) may recognize, cleave and remove DNA from fixed chromatin producing specific chromosome banding patterns. However, the modifications produced in the chromatin fibre are not easy to evaluate and compare. The aim of the present investigation was to visualize differences resulting in the texture of the chromatin fibre from metaphase chromosomes after each digestion using digital image analysis (DIA) facilities. To this purpose, metaphase chromosomes derived from a L-929 mouse cell line were digested with different REs (AluI, HpaII and HaeIII). Since light microscopy does not permit the observation of the chromatin fibre, DIA was performed on digitalized images of metaphase chromosomes under electron microscopy. The application of a LUT (Look Up Table) within the DIA software assigns a colour to each grey level of a digital image. The results obtained using a particular LUT, which permits the discrimination of specific chromatin fibre phenotypes resulting from each digestion, are reported and compared with those obtained under the light microscope.
journal_name
Cell Biol Intjournal_title
Cell biology internationalauthors
Gosálvez J,López-Fernández C,Fernández JL,Goyanes VJ,Buño Idoi
10.1006/cbir.1996.0026subject
Has Abstractpub_date
1996-03-01 00:00:00pages
213-7issue
3eissn
1065-6995issn
1095-8355pii
S1065-6995(96)90026-8journal_volume
20pub_type
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