Proceedings of the Pathological Society of Philadelphia, Volúmenes15-22

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Página 7 - ... 4. About 40 to 50 per cent, of children ranging from 1 to 15 years of age react positively to the toxin test ; this means that the preliminary use of the toxin test will eliminate the necessity of administering prophylactic doses of antitoxin to about 50 per cent, of children. 5. The toxin reaction indicates that the immunity conferred by an injection of antitoxin begins to disappear after ten days and has generally passed away entirely after four weeks. 6. The increased susceptibility of persons...
Página xxi - With eyes severe and beard of formal cut, Full of wise saws and modern instances; And so he plays his part; the sixth age shifts Into the lean and...
Página 7 - Persons reacting weakly or strongly positive usually contain less than %o of a unit of antitoxin per cubic centimeter of serum or none at all. These persons may be regarded as susceptible to diphtheria and in the event of exposure to infection should be passively immunized with an injection of antitoxin.
Página vii - ARTICLE IV The officers of the Society shall be a President, a Vice-President, a...
Página 60 - ... in destroying the erythrocytes or whether it plays merely a passive part as a place for the deposition of the disintegrating cells, there can be no question that in this organ, when it is present, a large number of cells undergo their final disintegration after the action of hemolytic poisons, and that the hemoglobin there liberated passes by the portal system directly to the liver. When the spleen is removed, this disintegration occurs in other organs, notably in the lymph nodes and bone marrow,...
Página 47 - Laboratories of the School of Medicine of the University of Pennsylvania, and the...
Página 37 - SUMMARY. Extracts of the kidneys of normal rabbits prepared one, two, three, and four days after the intravenous injection of egg albumen and horse serum have the power to sensitize guineapigs to a second injection of these proteins; the sensitization by first and second day extracts being constant and of intense degree, that by the third day extract less marked or sometimes absent, and by the fourth day extracts only occasional and always weak. Comparative studies of the power of the blood, liver,...
Página 61 - ... during the school course and 13 boys and 11 girls accelerated for one year or more. Girls maintain a higher school standing than boys; there are also more repeaters among the boys; and fewer cases of "skipping
Página 29 - ... less frequently, after the injection of liver and kidney. The constant increase of red cells in the peripheral circulation after injection of spleen, in view of the tendency to anemia following splenectomy, suggests that the spleen normally may exert a stimulating effect upon the formation of red cells in the bone marrow.
Página 62 - This would require that tall, healthy children of accelerated physiological development be encouraged to proceed through school as rapidly as possible within the limits of thoroughness, and that the small, light children of retarded physiological development be kept below or in the normal grade, doing supplementary work, since these short, light pupils are immature in mental development, although in many cases precocious in degree of brightness.

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