. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DNA IN SALAMANDER SOMATIC NUCLEI 243 of hydrolysis in 1 N HC1 at 60° C. was 20 minutes, though a difference of five minutes did not produce an appreciable change in the maximal intensity of the color produced by the subsequent treatment with the sulphurous fuchsin reagent for one hour. Unhydrolyzed sections were also stained for controls. All the slides measured were treated with the same stock Feulgen reagent kept completely colorless by storage in tightly closed containers at 5° C. Taricha granulosa LIVER 920 nuclei UJ _l
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DNA IN SALAMANDER SOMATIC NUCLEI 243 of hydrolysis in 1 N HC1 at 60° C. was 20 minutes, though a difference of five minutes did not produce an appreciable change in the maximal intensity of the color produced by the subsequent treatment with the sulphurous fuchsin reagent for one hour. Unhydrolyzed sections were also stained for controls. All the slides measured were treated with the same stock Feulgen reagent kept completely colorless by storage in tightly closed containers at 5° C. Taricha granulosa LIVER 920 nuclei UJ _l O ID z oc UJ m. 14 16 18 20 22 24 26 28 30 32 RELATIVE AMOUNT OF DNA FIGURE 1. Distribution of DNA in liver nuclei of the salamander, Taricha granulosa. Photometric measurements were made with an apparatus similar to that described by Swift (1950). Light of 550 m//, was isolated from a tungsten filament by a Bausch and Lomb interference filter. Optics on centerable mountings were carried on a Leitz microscope stand provided with a side-tube, and consisted of a B. & L. 4 mm. apochromatic objective ( ), a Leitz aplanatic, achromatic condenser ( ) stopped to 5 mm. diaphragm aperture, and 6 X or 8 X Leitz periplan oculars. Transmissions were recorded with a Farrand electron multiplier pho- tometer, employing an RCA 1P21 phototube and a Rubicon galvanometer. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
