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61.
Emiko Isogai Hiroshi Isogai Toshiyuki Masuzawa Daniele Postic Guy Baranton Yuri Kamewaka Koichi Kimura Takeshi Nishikawa Nobuhiro Fujii Norihisa Ishii Shigeaki Ohno Noboru Yamaguti 《Microbiology and immunology》1996,40(1):13-19
Ticks and blood samples were collected from wild sika deer (Cervus nippon yesoensis) during a hunting season (August to October) of 1991 at a selected location in Hokkaido, Japan. Ixodes persulcatus (adult and nymph) and I. ovatus (adult) were the common ticks on sika deer. Spirochetes were detected in the midgut of the ticks by the indirect peroxidase-conjugated antibody staining method and by dark-field microscopy after cultivation. By the reactive pattern of monoclonal antibodies, isolates were considered to belong to Borrelia garinii or B. japonica. In an antibody test, the percentage of seropositive deer was 69.0%. Most of the adult sika deer were positive for antibodies to the spirochetes. There are significant age-dependency in antibody level and seropositive rate. The surveillance of deer should be valuable in monitoring the transmission risk of B. burgdorferi sensu lato in nature. 相似文献
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Postic, Bosko (University of Pittsburgh, Pittsburgh, Pa.), Catherine DeAngelis, Mary K. Breinig, and Monto Ho. Effect of temperature on the induction of interferons by endotoxin and virus. J. Bacteriol. 91:1277-1281. 1966.-The effect of ambient and body temperature on interferon formation in rabbits injected intravenously with virus differed from that seen after injection of endotoxin. Newcastle disease virus-induced interferon (VII) was elevated by increasing ambient temperature to 35 C, whereas cooling of the rabbit at 4 C resulted in low VII levels. Neither of these conditions affected the titers of endotoxin-induced interferon (EII). However, a significant enhancement of EII levels was found in sera of shorn rabbits, in which the body temperature was lower than in unshorn animals by 1.0 to 1.5 F and the pyrogenic response to endotoxin was less by about 2 F. This enhancement of EII by relatively low body temperatures was also in striking contrast to the reported enhancing effect of high body temperature of the rabbit on the lethal action of endotoxin. It is suggested that the temperature optimum for formation of EII is lower than for formation of VII. 相似文献
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Jelena Postic Jasenka Cosic Karolina Vrandecic Drazenka Jurkovic Amgad A. Saleh John F. Leslie 《Journal of Phytopathology》2012,160(2):76-81
Weeds are alternative hosts of plant pathogens and when colonized may not exhibit disease symptoms. In 2008 and 2009, samples of weeds and plant debris were collected from 12 locations in eastern Croatia, and 300 Fusarium isolates colonizing them were identified. Strains were grouped and identified based on morphology and amplified fragment length polymorphism (AFLP) patterns. Portions of the β‐tubulin and translocation elongation factor 1‐α genes were sequenced from representative strains of each group to confirm the identifications. Fourteen Fusarium species were identified with F. graminearum (20%), F. verticillioides (18%), F. oxysporum (16%), F. subglutinans (13%) and F. proliferatum (11%) all present as more than 10% of the population. Fusarium acuminatum, F. avenaceum, F. concolor, F. crookwellense (F. cerealis), F. equiseti, F. semitectum, F. solani, F. sporotrichioides and F. venenatum, were all present at frequencies < 8%. Our results indicate that economically important Fusarium spp. may be isolated from numerous alternative hosts during the off season and that weeds and plant debris can serve as a reservoir of genetically diverse inoculum. 相似文献
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