Abstract
Summary
Cells from a spontaneous fibroma of the Mongolian gerbil could be cultivated continuously, becoming an established cell line. The modal number of chromosomes exhibited by the stemline constituting early cultures of this cell line was 44, the 2N chromosome number of Meriones unguiculatus. The continuing survivors in IMR-33 populations are predominantly hypotetraploid. With this report, the gerbil is included among those species which may harbor a structural entity resembling the intracisternal type A particle.
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