Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Томи 41 – 42The Society, 1902 |
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Сторінка 77
... cytoplasmic structures stain green , active chromatin , centrosomes and true nucleoli red , while resting chromatin takes a purple color . Its chief disadvantage is that it will in time fade . 1 The species was determined by means of ...
... cytoplasmic structures stain green , active chromatin , centrosomes and true nucleoli red , while resting chromatin takes a purple color . Its chief disadvantage is that it will in time fade . 1 The species was determined by means of ...
Сторінка 78
... cytoplasmic stains ( Fig . 4a ) . In one prepara- tion the cytoplasm of these cells was filled with particles , not rounded in shape but thread - like , and taking a very dark stain with iron hæmatoxylin . The chromatin consisted of ...
... cytoplasmic stains ( Fig . 4a ) . In one prepara- tion the cytoplasm of these cells was filled with particles , not rounded in shape but thread - like , and taking a very dark stain with iron hæmatoxylin . The chromatin consisted of ...
Сторінка 82
... cytoplasm are occasionally seen irregular masses of a dull brown tint ( yolk ? ) , but neither sphere substance nor centrosomes are apparent in the resting cell . In nuclei preparing to divide , the chromatin is seen to be arranged in ...
... cytoplasm are occasionally seen irregular masses of a dull brown tint ( yolk ? ) , but neither sphere substance nor centrosomes are apparent in the resting cell . In nuclei preparing to divide , the chromatin is seen to be arranged in ...
Сторінка 83
... cytoplasm lying close to the cell wall . trace of centrosome or sphere substance ( idiozome ) is discoverable ( Fig . 22 ) . The chromosomes now spread apart , although still connected by strands of linin . They are seen to be for the ...
... cytoplasm lying close to the cell wall . trace of centrosome or sphere substance ( idiozome ) is discoverable ( Fig . 22 ) . The chromosomes now spread apart , although still connected by strands of linin . They are seen to be for the ...
Сторінка 83
... cytoplasm are occasionally seen irregular masses of a dull brown tint ( yolk ? ) , but neither sphere substance nor centrosomes are apparent in the resting cell . In nuclei preparing to divide , the chromatin is seen to be arranged in ...
... cytoplasm are occasionally seen irregular masses of a dull brown tint ( yolk ? ) , but neither sphere substance nor centrosomes are apparent in the resting cell . In nuclei preparing to divide , the chromatin is seen to be arranged in ...
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Africa AMER AMERICAN PHILOSOPHICAL SOCIETY animals appear April Asia Australia auta autic beds belong blastopore body brachiopods Cambaroides Cambarus canals cells Central chromosomes cœlom connection contains crude oil Crustacea crystals curves Decapods deposits distillates distribution division domeykite drones eggs enteron Eocene equation evidence existence fact fauna Feb'y fertilization follicle formation forms fossils freshwater genera genus geographer geological Greater Antilles hydrocarbons islands Jan'y Jurassic land larva larvæ later Lower Cretaceous male mantle mass Mesozoic method Mexico Miocene nature Noctua North northern nuclei observed Ocean Oligocene origin parthenogenesis Pennsylvania petroleum Philadelphia PHILOS plate Pliocene polar body posterior Potamobius present probably PROC produced Prof queen region relation represented river sandstones separated shown solution South America southern species spermatocyte spermatogonia spermatozoa stage Terebratulina Tertiary theory tion Upper Cretaceous Zool