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The karyotype and cellular DNA contents of Amur sturgeon (Acipenser schrencki)

Song, S. Liu H. Sun D. Fan Z.

Metaphase chromosome specimens of Amur Sturgeon, injected with fetal calf serum, were prepared from short-term culture of kidney cells with air-drying technique. Its diploid chromosome number is 2n=238±8. Karyotype consists of 78m+l2sm+28st, t + 120±mc, NF: 328±. Diploid nucleus DNA content was measured from the peripheral erythrocytes, using flow cytometer (FACStar Pus, made in USA) and erythrocytes of chick (Gallus sp) as internal standard. DNA content of the ash is 11.73 ± 0.68 pg/N and the ratio to that of chickens is 5.06