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Edema and general atrophy in Stenostomum oesophagium associated with atrophy of the protonephridium by Margaret Hess is a Environmental Science article available to read on EtoBox.

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Stenostomum oesophagium has been an object of study in the laboratory of the Miller School of Biology at the University of Virginia since 1929. Occasionally individuals that are conspicuously abnormal have been found in the general cultures. On examination these animals show a distended epidermis, a collapsed and branched enteron, and a loss of the protonephridium. An attempt has been made to study such individuals histologically as well as to determine the cause of this abnormal condition. ## Methods Stenostomum oesophagium, which has been used exclusively in this study, is easily cultured in the laboratory, is sufficiently large to be seen without magnification, and can be rather carefully observed under an ordinary dissection microscope ( x 10.5 to x 30). The use of a dissection microscope enables one to observe a great number of animals each day, when experiments make this necessary. For a more detailed study, t.he animal may be placed in a hanging drop and observed under the 16 mm., 8 mm. or 4 mm. objective of a compound microscope. lThe writer is indebted to Prof. William A. Kepner, of the University of Virginia, under whose supervision this work was done, and wishes to expre

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Author

Margaret Hess

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0022-104X)

Published

1937

Language

EN

Field

Environmental Science (Life Sciences)