Drosophila melanogaster embryos that lacked ribosomal DNA were obtained from appropriate crosses. Cells were taken from such embryos before overt differentiation took place and were cultured in vitro. These cells differentiated into neurons and myocytes with the same success as did wild-type controls. Therefore, ribosomal RNA synthesis is not necessary for the differentiation of neurons and myocytes in vitro.
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http://dx.doi.org/10.1093/genetics/73.3.429 | DOI Listing |
Int J Syst Evol Microbiol
January 2025
Laboratorio de Bacterias Lcticas y Probiticos, Instituto de Agroqumica y Tecnologa de Alimentos (IATA-CSIC), Av. Agustn Escardino 7, 46980 Paterna, Spain.
A novel strain of the genus , named He02, was isolated from flowers of L. in a survey for lactic acid bacteria associated with wild and cultivated plants in the metropolitan area of Valencia, Spain. Partial 16S rRNA gene sequencing revealed a similarity of 99% to DSM 23037=Ryu1-2.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
January 2025
National Animal Disease Center, Agricultural Research Service, USDA, Ames, IA, USA.
Three novel strains within the genus (29887, 29892 and 29896) were isolated from healthy pigs during routine veterinary physical exams. All three strains were non-motile and non-spore-forming Gram-positive cocci. The complete genome of each strain was attained, and phylogenetic analyses were performed.
View Article and Find Full Text PDFMycopathologia
January 2025
Department of Dermatology, Wuhan No.1 Hospital, Wuhan, Hubei, China.
Adult tinea capitis, especially kerion, caused by Trichophyton tonsurans is relatively rare in China. Here, we report a case caused by the agent in an old woman with normal immune function. Fungal microscopic examination and culture were positive.
View Article and Find Full Text PDFCurr Microbiol
January 2025
Instituto de Ciencias Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Sede Talca, Talca, 3460000, Chile.
In the present study, the taxonomic position of Salinisphaera halophila (NZ_AYKF00000000) and Salinisphaera orenii (NZ_AYKH00000000) was re-evaluated. In addition, their metabolic potentials and mechanisms for mitigating stress conditions were determined. Comparisons of 16S rRNA gene sequences, analysis of the phylogenetic tree, phylogenomic tree, average nucleotide identity (ANI), and digital DNA-DNA hybridization (dDDH) values were conducted.
View Article and Find Full Text PDFParasite
January 2025
National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, PR China.
The aim of this study was to clarify the taxonomic identification of a hemoflagellate and assess the effect of trypanosome infection on Larimichthys crocea. Giemsa staining showed the presence of three morphotypes of trypomastigotes. The trypanosomes had the following morphological characteristics: a slender body with a long flagellum at the front; body size 12.
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