Abstract
The expression of nucleolus organizer region (NOR) activity in diploid cells was investigated in a model mammalian hybrid system, the hinny (female ass x male horse), by sequential Ag-NOR and chromomycin A3/distamycin A/DAPI (CDD) staining in lectin-stimulated peripheral blood lymphocytes. In the majority of cases we found non-expression of the horse-derived NOR chromosomes in the hinny. However, in one case there was strong NOR expression on horse-derived chromosome no. 1.
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Kopp, E., Mayr, B. & Schleger, W. Ribosomal RNA expression in a mammalian hybrid, the hinny. Chromosoma 96, 434–436 (1988). https://doi.org/10.1007/BF00303037
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DOI: https://doi.org/10.1007/BF00303037