On differential staining

Petrunkevitch, Alexander

doi:10.1002/ar.1090680303

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…Modern controlled staining methods should be combined with phase microscopy (Petrunkevitch, 1937;Stowell and Alber, 1943).…”

Section: Slightly Absorbing Specimensmentioning

confidence: 99%

Phase microscopy; principles and applications [by] Alva H. Bennett [and others]

Bennett¹

1951

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PREFACE ix greatly encouraged us at an early stage of our work with his favorable observations of living cancer cells by means of our initial phase microscopic equipment. We wish to express our indebtedness to Mr. Bryant Glenny, Jr., General Manager of the Instrument Division, American Optical Company, Buffalo, New York, for his encouragement throughout our investigations. This work would have been incomplete without the cooperation of many of the world's outstanding makers of microscopes and allied equipment. These manufacturers have kindly supplied the illustrations of commercially available phase microscopes.

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“…Modern controlled staining methods should be combined with phase microscopy (Petrunkevitch, 1937;Stowell and Alber, 1943).…”

Section: Slightly Absorbing Specimensmentioning

confidence: 99%

Phase microscopy; principles and applications [by] Alva H. Bennett [and others]

Bennett¹

1951

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A method for staining collagenous tissue in gross anatomical sections

Tobin

Rumery

1948

Anat. Rec.

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Nuclear reorganization in resting cysts of Colpoda duodenaria

Taylor

Garnjobst

1941

Journal of Morphology

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The macronucleus of Colpodiz duodenaria is a prominent, well-differentiated organelle in the free-swimming individual. During binary fission, along with the micronucleus, it undergoes a complex rcorganization, resulting in a more precise division of its substance than is found in ciliates generally. The macroiiuclens in the resting cyst, because of its large size and differentiation, is the most readily observable structure in all known stages, stained or unstained. Therefore its behavior, found to be sti*ucturttlly 1-isible and reproducible under constant conditions, is of special interest in view of further experiments.As a nuclear phenomenon, the reorganization of the macronucleus in the resting cysts is unique in a t least two respects :(1) It is not accompanied by division of the micronucleus; arid (2) it results in two products, one of which becomes the new rnacronuclens, while the other degenerates and disappears in the cytoplasm. When the process has been described it will become clear that the pmceclure in this Colpoda differs in certain respects from the account of iiuclear reorganization given by Kidder and ClafT ('38) for the "resistant " cysts of Colpoda cucullus.The reorganization in C. duodenaria resting cysts of small dimensions (not more than 17 p) is strikingly similar t o the nuclear changes during binary fission, particularly in the early stages. A detailed study of the two processes reveals that the siniilarity throughout is greatest when small digenic 197

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On differential staining

Cited by 6 publications

References 14 publications

Phase microscopy; principles and applications [by] Alva H. Bennett [and others]

Phase microscopy; principles and applications [by] Alva H. Bennett [and others]

A method for staining collagenous tissue in gross anatomical sections

Nuclear reorganization in resting cysts of Colpoda duodenaria

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