| aggregated distribution of infective spots composed of leptotrombidium pallidum, highly prevalent with rickettsia tsutsugamushi, demonstrated by sentinel voles, microtus montebelli, on the ground. | in the epidemiological surveys on scrub typhus at chichibu city near tokyo, an area, 350 m by 35 m, in the hitsujiyama park was found to be heavily infested with rickettsia tsutsugamushi (rt). distribution of trombiculid mites and their infection rates in this area were studied using sentinel animals, 48 microtus montebelli and 10 ddy mice. the surveys were conducted 6 times in the autumn in 1985 and 1986. at the first 2 surveys, 16 animals were placed at random, and 4 restricted areas were iden ... | 1990 | 2128945 |
| [the history of the "deutsche maus", the origin of the dd mouse group]. | an inbred strain of mice, ddd, was established at the institute for infectious diseases (so-called denken in japanese; currently called institute of medical science, the university of tokyo: jms) in 1962. many interesting characteristics including development of pregnancy-dependent mammary tumors, presence of fv-2s, a friend leukemia virus-susceptible gene, high incidence of hydronephrosis and low level of natural killer (nk) cell activity have been reported in this strain of mice. two congenic ... | 1990 | 2193812 |
| comparison of ehrlichia muris strains isolated from wild mice and ticks and serologic survey of humans and animals with e. muris as antigen. | in metropolitan tokyo, the ehrlichia muris seropositivity rate of 24 wild mice was 63% in hinohara village, but in the surrounding areas, it was 0 to 5%. this finding suggests that the reservoir of e. muris is focal. among the 15 seropositive mice, ehrlichiae were isolated from 9 apodemus speciosus mice and 1 a. argenteus mouse, respectively. five ehrlichial isolates were obtained from 10 ticks (haemaphysalis flava) collected in asuke town, aichi prefecture, where the e. muris type strain had be ... | 1999 | 10074536 |
| [historical review on chemical and medical studies of globefish toxin before world war ii]. | "fugu," a species of globefish has eaten by japanese people for a long time, so globefish poisoning in japan has been prevalent. figures are shown in the annual food poisoning report collected and issued by health service authorities of japanese government since 1879. these reports prompted dr. yoshizumi tahara, national institute of hygienic sciences to conduct a chemical investigation of the toxic substance of globefish in 1884. however, the analysis was very difficult and his report of invest ... | 1994 | 11613509 |
| population structure of the large japanese field mouse, apodemus speciosus (rodentia: muridae), in suburban landscape, based on mitochondrial d-loop sequences. | genetic structure of the large japanese field mouse populations in suburban landscape of west tokyo, japan was determined using mitochondrial dna control region sequence. samples were collected from six habitats linked by forests and green tract along the tama river, and from two forests segregated by urban areas from those continuous habitats. thirty-five haplotypes were detected in 221 animals. four to eight haplotypes were found within each local population belonging to the continuous landsca ... | 2004 | 15487988 |
| attitudes of the public and scientists to biotechnology in japan at the start of 2000. | this survey on biotechnology and bioethics was carried out on national random samples of the public and scientists in november 2000-january 2000 [sic]throughout japan, and attendees at the novartis life science forum held on 29 september 1999 in tokyo. the sample size was 297, 370, and 74 respectively. while there is a better awareness of gmos in 2000 compared to 1991; the trend shows an increase in the perceived risks of gmos followed by growing resistance in japan. while a majority of persons ... | 2000 | 16273712 |
| risk of accidental invasion and expansion of allochthonous mice in tokyo metropolitan coastal areas in japan. | house mouse (mus musculus) is one of the perilous animal vectors for imported zoonosis such as a lymphocytic choriomeningitis (lcmv) infectious disease, and probably unknown emerging and/or re-emerging infectious diseases as well. it is necessary to prevent such diseases by regular surveys for behavioral trends of these allochthonous mice. however, such a trial has never been attempted in japan. from 1998 to 2002, we analyzed partial sequences of the d-loop region in mtdna, which provides powerf ... | 2007 | 17991997 |
| identification of rrna gene loci in the wild mouse (mus musculus molossinus) captured at hachioji, tokyo. | mus musculus (m. m.) molossinus has been considered an independent subspecies of mus musculus. to elucidate the evolutional origin of this subspecies, we carried out double-color fish using 18s-28s ribosomal dna and mouse chromosome paint probes. among eleven rdna loci detected, five loci on chromosomes 12, 15, 16, 18 and 19 were common to both mus musculus (m. m.) musculus and m. m. molossinus and the other six loci, on chromosomes 1, 5, 10, 11, 13 and 17, were characteristic in m. m. molossinu ... | 2007 | 18176025 |
| microbiological survey of mice (mus musculus) purchased from commercial pet shops in kanagawa and tokyo, japan. | information regarding the prevalence of infectious agents in mice in pet shops in japan is scarce. this information is particularly useful for minimizing the risk of potential transmission of infections to laboratory mice. therefore, we surveyed infectious agents in mice from pet shops in kanagawa and tokyo, japan. the survey was conducted in 28 mice from 5 pet shops to screen for 47 items (17 viruses, 22 bacteria and fungi, 10 parasites) using culture tests, serology, pcr, and microscopy. the m ... | 2014 | 25502736 |