Organism as a wholePutnam, 1916 - 379 pages |
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Page 78
... membrane formation . The egg , however , does not develop but dies rapidly , as is the case when we induce artificial membrane formation , as we shall see in the next chapter . Godlewski found that if the sperm of Chatopterus and the ...
... membrane formation . The egg , however , does not develop but dies rapidly , as is the case when we induce artificial membrane formation , as we shall see in the next chapter . Godlewski found that if the sperm of Chatopterus and the ...
Page 86
... formation of a membrane- the fertilization membrane . It might be considered possible that this membrane formation or the alteration underlying or accompanying it is responsible for the fact that an egg once fertilized becomes immune ...
... formation of a membrane- the fertilization membrane . It might be considered possible that this membrane formation or the alteration underlying or accompanying it is responsible for the fact that an egg once fertilized becomes immune ...
Page 87
... membrane is occasionally replaced by a soft gelatinous film . If no second treat- ment is given to such eggs they will disintegrate in a ... membrane formation does not create such a block al- though Specificity in Fertilization 87.
... membrane is occasionally replaced by a soft gelatinous film . If no second treat- ment is given to such eggs they will disintegrate in a ... membrane formation does not create such a block al- though Specificity in Fertilization 87.
Page 88
Jacques Loeb. membrane formation does not create such a block al- though it puts an end to the " fertilizin " reaction . In the egg of purpuratus the " fertilizin " reaction ceases when the jelly surrounding the egg is dissolved by an ...
Jacques Loeb. membrane formation does not create such a block al- though it puts an end to the " fertilizin " reaction . In the egg of purpuratus the " fertilizin " reaction ceases when the jelly surrounding the egg is dissolved by an ...
Page 97
... membrane formation ; and which consists in the appearance of a fine membrane around the egg , separated from the latter by a liquid ( Figs . 4 and 5 ) . O. and R. Hertwig and Herbst had FIG . 4 FIG . 5 FIG . 4. Unfertilized egg ...
... membrane formation ; and which consists in the appearance of a fine membrane around the egg , separated from the latter by a liquid ( Figs . 4 and 5 ) . O. and R. Hertwig and Herbst had FIG . 4 FIG . 5 FIG . 4. Unfertilized egg ...
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agglutination animals annelids Arbacia Arch artificial membrane artificial parthenogenesis assumption bacteria Biol blastomeres blood body butyric acid cell division chapter characters chemical chromosome concentration contained cortical layer cytolysis definite determined digestion disintegration Driesch effect egg of purpuratus embryo enter the egg Entwcklngsmech enzyme existence experiments eyes f. d. ges fact female fertilized fish foreign species franciscanus frog Fundulus genus give rise graft groups grow growth heliotropic hemoglobin heredity hermaphroditic hybrids hypertonic solution idea induce Jour lack of oxygen large number larvæ latter light Lillie lipoids living matter Loeb male Mendelian heredity normal sea water nucleus observed ovaries oxidations parthenogenesis permeability phenomena phenomenon physicochemical Physiol pigment plants polyp positively heliotropic possible produced proteins protoplasm pure reaction regeneration result rôle salts sea urchin sea water sea-urchin egg segment serum shown sperm spermatozoön spermatozoön enters starfish Strongylocentrotus substances synthesis theory tion tissue transplanted unfertilized egg Wasteneys X chromosome