The Relationship of “True Luschka Ducts,” Adenomas, and Aberrant Liver Tissue in the Wall of the Human Gall Bladder

1941 ◽  
Vol 11 (12) ◽  
pp. 878-881 ◽  
Author(s):  
Edwin T. Thorsness
Keyword(s):  
Gall Bladder ◽  
Liver Tissue ◽  
Relationship Of ◽  
The Relationship

Preparation of Freeze-Stopped Rat Liver Tissue for Transmission Electron Microscopy

1976 ◽  
Vol 34 ◽  
pp. 332-333 ◽  
Author(s):  
B. S. Lim ◽  
R. Veech ◽  
R. Slovis ◽  
J. D. Solomon
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Dehydrogenase Activity ◽  
Rat Liver ◽  
Liver Tissue ◽  
Transmission Electron ◽  
Centrifuge Tube ◽  
Glutamate Dehydrogenase Activity ◽  
Relationship Of ◽  
The Relationship

The relationship of morphological integrity and viability of mitochondria in freeze-stopped cells is of considerable interest and importance to biological scientists. This study represents the preliminary work for obtaining ultrastructural data for comparison with glutamate dehydrogenase activity, a marker for mitochondria protein, on freeze-stopped liver tissue from the rat.The pellets of ground freeze-stopped rat liver were fixed in three different ways: (l) OsO4 fume fixation. The fixing chamber consists of a capped plastic centrifuge tube containing an open ampule of OsO4 crystals. The chamber was maintained at -90°C at all time before and during fixation. After an overnight fixing, the tissue pellets were gradually brought to 4°C in a refrigerator and postfixed in glutaraldehyde.

scholarly journals The Relationship of the Aflatoxin in the Diet on Rat Liver Tissue

2021 ◽  
Vol 23 (2) ◽  
Author(s):  
Dr. Saba Thamer Mosa ◽  
Keyword(s):  
Immune System ◽  
Rat Liver ◽  
Aflatoxin B1 ◽  
Liver Tissue ◽  
Rna Synthesis ◽  
Animal Feed ◽  
Health Problems ◽  
Plant Products ◽  
Relationship Of ◽  
The Relationship

Aflatoxins are produced by certain strains of fungi under warm, humid conditions during the growth of plants in the field and during storage of plant products (grains, legumes, nuts) and also they grow on some foodstuffs and animal feed. They are natural metabolism byproducts produced by molds and are considered one of the most dangerous compounds that cause carcinogenicity. If a person or animal consumes a food containing aflatoxin, they are vulnerable to many health problems. It has been found that the most dangerous aflatoxin is aflatoxin B1 because it works on cellular membranes as it inhibits RNA synthesis and is considered one of the factors that cause mutations due to its effect on DNA and also has an effect on the liver and is considered one of the strongest carcinogen compounds, which leads to the occurrence of tumors in the liver in case It is present in food at concentrations of 10 ppb. It was also found to have an immunosupressive effect on the body’s immune system.

On the Relationship of Gall-Bladder Emptying to Ingested Fats

Radiology ◽  
1928 ◽  
Vol 11 (1) ◽  
pp. 45-47 ◽  
Author(s):  
Daniel N. Silverman ◽  
Willy Denis
Keyword(s):  
Gall Bladder ◽  
Bladder Emptying ◽  
Relationship Of ◽  
The Relationship

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

Studies on Leukemogenic and Sarcomagenic Viruses

1970 ◽  
Vol 28 ◽  
pp. 156-157
Author(s):  
Leon Dmochowski
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Morphological Properties ◽  
Mode Of Development ◽  
Relationship Of ◽  
The Relationship

Electron microscopy has proved to be an invaluable discipline in studies on the relationship of viruses to the origin of leukemia, sarcoma, and other types of tumors in animals and man. The successful cell-free transmission of leukemia and sarcoma in mice, rats, hamsters, and cats, interpreted as due to a virus or viruses, was proved to be due to a virus on the basis of electron microscope studies. These studies demonstrated that all the types of neoplasia in animals of the species examined are produced by a virus of certain characteristic morphological properties similar, if not identical, in the mode of development in all types of neoplasia in animals, as shown in Fig. 1.

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