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Copyright of Experientia is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In tissue cultures of ovarian tubes of Galleria mellonella and Bombyx mori (Lepidoptera) infected by the virus of the 'disease of dense nuclei' of G. mellonella, fibroblasts show changes characteristic of the disease. These changes consist of the formation of intranuclear, Feulgen-positive, basophilic masses and are followed by lysis of the cells. [ABSTRACT FROM AUTHOR]

Copyright of Experientia is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Using a simplified medium, the composition of which is described in the text, cell cultures (fibroblast type) were obtained from nymphal ovarian tubes of Bombyx mori. The change in the form between fibroblasts and spindle cells is described. The preservation of activity of haemolymph congealed to − 20° C for a long time is shown; the advantages of using nymphs for cultivating tissues in virological series are also noted. [ABSTRACT FROM AUTHOR]