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. 2002 Mar;68(3):1478–1484. doi: 10.1128/AEM.68.3.1478-1484.2002

FIG. 2.

FIG. 2.

Denaturing gradient gel comparing representative Antarctic and Arctic samples and clones. Lanes: 1, Nitrosomonas cryotolerans; 2, sample from Palmer Station B, 50 m, 4 February 1997; 3, clone A-2 from Palmer Station B, 50 m, 4 February 1997; 4, sample from Palmer Station B, 3 m, 13 September 1996 (this nitAB product was also sequenced directly); 5, sample SCICEX 96B, 55 m, from 83°38′N, 131°16E (this nitAB product was also sequenced directly); 6, sample SCICEX 96A, 132 m, from 80°28′N, 156°53′W; 7, clone 96A-8 from sample SCICEX 96A; 8, sample SCICEX 95B, 55 m, from 72°34′N, 155°47′W; 9, clone SCICEX 95B-10 from sample 95B; 10, sample SCICEX 95A, 55 m, from 72°16′N, 154°24′W; 11, clone SCICEX 95A-44 from sample SCICEX 95A.