A note on foetal growth and development of the giraffe Giraffa camelopardalis giraffa

Ultrasonography (USG) for embryo-foetal foetometry is widely used in the management of goat breeding. Tissues and organs of the embryo/foetus are measured and evaluated to assess gestational age. Transrectal, transabdominal and transvaginal probes are used to perform the ultrasound examination. Technological advances, especially with regard to ultrasound image resolution, enable precise visualization of embryo-foetal structures in goats. The article reviews the foetometric measurements used in ultrasound examination of pregnancy in goats. Performing this examination during specific periods of gestation enables effective monitoring of embryonic and foetal growth and development. In addition to measurements of embryo-foetal structures, measurements of foetal-maternal structures such as the placentomes and umbilical cord are important as well. The role of ultrasound in monitoring goat pregnancy, both normal and pathological, was also emphasized.

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Human Foetal Sacral Length Measurement for the Assessment of Foetal Growth and Development by Ultrasonography and Dissection

Anatomia Histologia Embryologia ◽

10.1111/j.1439-0264.2001.t01-1-0304.x ◽

2001 ◽

Vol 30 (3) ◽

pp. 141-146 ◽

Cited By ~ 2

Author(s):

A. Kağan Karabulut ◽

B. Köylüoğlu ◽

İlknur Uysal

Keyword(s):

Growth And Development ◽

Length Measurement ◽

Foetal Growth

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FOETAL GROWTH AND ITS INFLUENCE ON POSTNATAL GROWTH AND DEVELOPMENT

The Control of Fat and Lean Deposition ◽

10.1016/b978-0-7506-0354-6.50010-x ◽

1992 ◽

pp. 111-127 ◽

Cited By ~ 11

Author(s):

A.W. BELL

Keyword(s):

Growth And Development ◽

Postnatal Growth ◽

Foetal Growth

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An ultrastructural study of vegetative incompatibility in plants

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100083047 ◽

1978 ◽

Vol 36 (2) ◽

pp. 436-437

Author(s):

Randy Moore

Keyword(s):

Ultrastructural Study ◽

Cell Walls ◽

Growth And Development ◽

Solanum Pennellii ◽

Initial Product ◽

Basic Aspect ◽

Tissue Interactions ◽

Graft Interface ◽

Antigen Antibody ◽

Standard Fixation

Cell and tissue interactions are a basic aspect of eukaryotic growth and development. While cell-to-cell interactions involving recognition and incompatibility have been studied extensively in animals, there is no known antigen-antibody reaction in plants and the recognition mechanisms operating in plant grafts have been virtually neglected.An ultrastructural study of the Sedum telephoides/Solanum pennellii graft was undertaken to define possible mechanisms of plant graft incompatibility. Grafts were surgically dissected from greenhouse grown plants at various times over 1-4 weeks and prepared for EM employing variations in the standard fixation and embedding procedure. Stock and scion adhere within 6 days after grafting. Following progressive cell senescence in both Sedum and Solanum, the graft interface appears as a band of 8-11 crushed cells after 2 weeks (Fig. 1, I). Trapped between the buckled cell walls are densely staining cytoplasmic remnants and residual starch grains, an initial product of wound reactions in plants.

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Identification of calcium oxalate crystals in dried or fixed tobacco leaf

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100111550 ◽

1984 ◽

Vol 42 ◽

pp. 288-289

Author(s):

Vicki L. Baliga ◽

Mary Ellen Counts

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Calcium Oxalate ◽

Growth And Development ◽

Polarized Light ◽

Calcium Oxalate Crystals ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Scanning Electron

Calcium is an important element in the growth and development of plants and one form of calcium is calcium oxalate. Calcium oxalate has been found in leaf seed, stem material plant tissue culture, fungi and lichen using one or more of the following methods—polarized light microscopy (PLM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-ray diffraction.Two methods are presented here for qualitatively estimating calcium oxalate in dried or fixed tobacco (Nicotiana) leaf from different stalk positions using PLM. SEM, coupled with energy dispersive x-ray spectrometry (EDS), and powder x-ray diffraction were used to verify that the crystals observed in the dried leaf with PLM were calcium oxalate.

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SEM study of the morphological effects of kinetin and zeatin on the growth and development of the apical meristem in wheat

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100141263 ◽

1995 ◽

Vol 53 ◽

pp. 978-979

Author(s):

G. M. Hutchins ◽

J. S. Gardner

Keyword(s):

Growth And Development ◽

Furfuryl Alcohol ◽

Apical Meristem ◽

Plant Cells ◽

Triticum Aestivum L ◽

Morphological Development ◽

Naturally Occurring ◽

Chinese Spring Wheat ◽

Sem Study ◽

Moist Environment

Cytokinins are plant hormones that play a large and incompletely understood role in the life-cycle of plants. The goal of this study was to determine what roles cytokinins play in the morphological development of wheat. To achieve any real success in altering the development and growth of wheat, the cytokinins must be applied directly to the apical meristem, or spike of the plant. It is in this region that the plant cells are actively undergoing mitosis. Kinetin and Zeatin were the two cytokinins chosen for this experiment. Kinetin is an artificial hormone that was originally extracted from old or heated DNA. Kinetin is easily made from the reaction of adenine and furfuryl alcohol. Zeatin is a naturally occurring hormone found in corn, wheat, and many other plants.Chinese Spring Wheat (Triticum aestivum L.) was used for this experiment. Prior to planting, the seeds were germinated in a moist environment for 72 hours.

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