scholarly journals The Relationship of the Lysozyme Fraction in Thick Egg White to Fertility and Hatchability of Eggs

1970 ◽  
Vol 49 (4) ◽  
pp. 987-991 ◽  
Author(s):  
E.A. Sauter ◽  
C.F. Petersen ◽  
E.E. Steele
Keyword(s):  
Egg White ◽  
Relationship Of ◽  
The Relationship

scholarly journals CYTOCHEMICAL OBSERVATIONS ON THE RELATIONSHIP BETWEEN LYSOSOMES AND PHAGOSOMES IN KIDNEY AND LIVER BY COMBINED STAINING FOR ACID PHOSPHATASE AND INTRAVENOUSLY INJECTED HORSERADISH PEROXIDASE

1964 ◽  
Vol 20 (3) ◽  
pp. 497-507 ◽  
Author(s):  
Werner Straus
Keyword(s):  
Acid Phosphatase ◽  
Egg White ◽  
Frozen Sections ◽  
Weak Reaction ◽  
Tubule Cells ◽  
Portal Veins ◽  
Color Reactions ◽  
Relationship Of ◽  
The Relationship ◽  
Formalin Fixed

After incubation of formalin-fixed, frozen sections of kidney and liver from peroxidase-treated rats in an azo dye medium for acid phosphatase, and after subsequent incubation of the same sections with benzidine, phagosomes were stained blue and lysosomes were stained red in the same cells. It was observed that newly formed phagosomes were separate from preexisting lysosomes in the tubule cells of the kidney and in the Kupffer cells of the liver at early periods after treatment with peroxidase. At later periods, the color reactions for acid phosphatase and peroxidase occurred in the same granules. The reaction of peroxidase decreased gradually and disappeared from the phago-lysosomes after 2 to 3 days, whereas the reaction for acid phosphatase persisted. In the liver, most of the injected protein was concentrated in large phagosomes located at the periphery of the cells lining the sinusoids. The peribiliary lysosomes showed a relatively weak reaction for peroxidase in the proximity of the portal veins. After pathological changes of permeability, phagosomes and lysosomes lost their normal location and fused, in the interior of many liver cells, to form large vacuoles or spheres. The effects of a reduced load of peroxidase and the effects of the pretreatment with another protein (egg white) on the phago-lysosomes of the kidney were tested. The relationship of the fusion of phagosomes with lysosomes to the size of normal and pathological phago-lysosomes was discussed.

scholarly journals THE RELATIONSHIP OF THE RECEPTORS OF A NEW STRAIN OF VIRUS TO THOSE OF THE MUMPS-NDV-INFLUENZA GROUP

1950 ◽  
Vol 91 (2) ◽  
pp. 177-184 ◽  
Author(s):  
George K. Hirst
Keyword(s):  
Newcastle Disease Virus ◽  
Disease Virus ◽  
Newcastle Disease ◽  
Egg White ◽  
The Other ◽  
Cellular Receptors ◽  
Relationship Of ◽  
The Relationship

The interrelationships of the cellular receptors and the hemagglutinin inhibitors of a new strain of virus (1233) to members of the mumps-Newcastle disease-influenza group have been investigated. It was found that strain. 1233 does not destroy the receptors or inhibitors of the other group, nor does the latter destroy 1233 receptors or inhibitor. The sole exception to this statement was a moderate destruction of 1233 inhibitor in egg white by Newcastle disease virus. The classification of strain 1233 was discussed in the light of this evidence, evidence which tends to place strain 1233 in a different category from that of any other strain of the MNI group.

scholarly journals THE RELATIONSHIP OF CHRONIC PROTEIN INTOXICATION IN ANIMALS TO ANAPHYLAXIS

1915 ◽  
Vol 22 (6) ◽  
pp. 793-799 ◽  
Author(s):  
Warfield T. Longcope
Keyword(s):  
Horse Serum ◽  
Egg White ◽  
Foreign Proteins ◽  
Relationship Of ◽  
The Relationship ◽  
Made In

Such foreign proteins as horse serum and egg-white in the amounts employed in these experiments do not produce evidences of intoxication immediately after injection into rabbits. Single large injections do, however, produce changes in the parenchymatous organs after a period often to twenty-one days. These develop at the time or immediately after the animal has formed antibodies for the foreign proteins. The mechanism of the development of the lesions in the myocardium, liver, and kidneys of rabbits is thus the same, whether a single inoculation is given or whether repeated inoculations are made in sensitized animals. By the latter method, however, much more marked and extensive changes may be produced.

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.

The relationship of IGE receptor topography to signaling activity in RBL-2H3 mast cells

1991 ◽  
Vol 49 ◽  
pp. 236-237
Author(s):  
J.R. Pfeiffer ◽  
J.C. Seagrave ◽  
C. Wofsy ◽  
J.M. Oliver
Keyword(s):  
Mast Cells ◽  
Protein A ◽  
Scattered Electron ◽  
Ige Receptor ◽  
Receptor Complexes ◽  
Ige Binding ◽  
Electron Imaging ◽  
Small Clusters ◽  
Relationship Of ◽  
The Relationship

In RBL-2H3 rat leukemic mast cells, crosslinking IgE-receptor complexes with anti-IgE antibody leads to degranulation. Receptor crosslinking also stimulates the redistribution of receptors on the cell surface, a process that can be observed by labeling the anti-IgE with 15 nm protein A-gold particles as described in Stump et al. (1989), followed by back-scattered electron imaging (BEI) in the scanning electron microscope. We report that anti-IgE binding stimulates the redistribution of IgE-receptor complexes at 37“C from a dispersed topography (singlets and doublets; S/D) to distributions dominated sequentially by short chains, small clusters and large aggregates of crosslinked receptors. These patterns can be observed (Figure 1), quantified (Figure 2) and analyzed statistically. Cells incubated with 1 μg/ml anti-IgE, a concentration that stimulates maximum net secretion, redistribute receptors as far as chains and small clusters during a 15 min incubation period. At 3 and 10 μg/ml anti-IgE, net secretion is reduced and the majority of receptors redistribute rapidly into clusters and large aggregates.

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