DEVELOPMENTAL CHANGES IN RED CELL AND PLASMA VOLUMES IN THE NEWBORN RAT

1969 ◽  
Vol 47 (4) ◽  
pp. P-18-P-19
Author(s):  
I Kaldor ◽  
Anne M Masters
Keyword(s):  
Developmental Changes ◽  
Red Cell ◽  
Newborn Rat

scholarly journals DEVELOPMENTAL CHANGES OF ERYTHROPOIESIS IN CULTURED CHICK BLASTODERMS

1971 ◽  
Vol 51 (2) ◽  
pp. 440-451 ◽  
Author(s):  
Helen K. Hagopian ◽  
Vernon M. Ingram
Keyword(s):  
Cell Population ◽  
Developmental Changes ◽  
Erythroid Cell ◽  
Synthetase Activity ◽  
Red Cell ◽  
Cell Type ◽  
Cell Cycle Time ◽  
Population Kinetics ◽  
Area Vasculosa ◽  
Hemoglobin Type

The erythropoietic area of very early chick embryos was cultured as a tissue for up to nine days to study the changes in red cell type and hemoglobin type, the cell cycle time, the cell population kinetics, and the DNA synthetase activity of these cells. It was found that the area vasculosa without the participation of the embryo proper contained the information and the timing mechanism required to produce not only the early primitive erythroid cell population, but also in due course, the later definitive cell type, each with its appropriate hemoglobin types. Also the precursors of the definitive cell type are active in DNA synthesis and therefore are probably in cycle very early in the culture period.

Developmental changes in Ca2+ currents from newborn rat cardiomyocytes in primary culture

1994 ◽  
Vol 428 (3-4) ◽  
pp. 241-249 ◽  
Author(s):  
Jean -Pierre Gomez ◽  
Daniel Potreau ◽  
Jean -Eric Branka ◽  
Guy Raymond
Keyword(s):  
Primary Culture ◽  
Developmental Changes ◽  
Newborn Rat ◽  
Rat Cardiomyocytes

Spherulitic crystal growth in the prodissoconch larval of Crassostrea virginica

1983 ◽  
Vol 41 ◽  
pp. 518-519
Author(s):  
George G. Cocks ◽  
Louis Leibovitz ◽  
DoSuk D. Lee
Keyword(s):  
Crystal Structure ◽  
Crassostrea Virginica ◽  
Crystal Orientation ◽  
Developmental Changes ◽  
Gastrula Stage ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Stages Of Growth ◽  
Early Stages ◽  
Initial Deposition

Our understanding of the structure and the formation of inorganic minerals in the bivalve shells has been considerably advanced by the use of electron microscope. However, very little is known about the ultrastructure of valves in the larval stage of the oysters. The present study examines the developmental changes which occur between the time of conception to the early stages of Dissoconch in the Crassostrea virginica(Gmelin), focusing on the initial deposition of inorganic crystals by the oysters.The spawning was induced by elevating the temperature of the seawater where the adult oysters were conditioned. The eggs and sperm were collected separately, then immediately mixed for the fertilizations to occur. Fertilized animals were kept in the incubator where various stages of development were stopped and observed. The detailed analysis of the early stages of growth showed that CaCO3 crystals(aragonite), with orthorhombic crystal structure, are deposited as early as gastrula stage(Figuresla-b). The next stage in development, the prodissoconch, revealed that the crystal orientation is in the form of spherulites.

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