| antibodies to borrelia burgdorferi in rodents in the eastern and southern united states. | serologic studies were conducted to determine whether white-footed mice (peromyscus leucopus) and cotton mice (peromyscus gossypinus) contained serum antibodies to borrelia burgdorferi, the causative agent of lyme borreliosis. enzyme-linked immunosorbent assays detected antibodies to this spirochete in 35.7 and 27.3% of 56 p. leucopus and 535 p. gossypinus serum samples, respectively, collected in connecticut, north carolina, south carolina, georgia, florida, alabama, and mississippi. antibody t ... | 1992 | 1624561 |
| geographic differences for delay of sexual maturation in peromyscus leucopus: effects of photoperiod, pinealectomy, and melatonin. | effects of short-day photoperiod, pinealectomy, and melatonin on sexual maturation were tested in peromyscus leucopus from either connecticut (ct) or georgia (ga). laboratory reared-stocks from ct and ga were exposed to short daylength (photoperiod) from birth or 25 days of age. at 12 wk of age, delay in sexual maturation was indicated in most ct mice by decreased testis length, combined testes weight, and seminal vesicle weight. conversely, ga animals did not delay sexual maturation when expose ... | 1989 | 2624861 |
| geographic variation in peromyscus leucopus: short-day induced reproductive regression and spontaneous recrudescence. | in order to determine if intraspecific differences exist in the photoperiodic control of the reproductive cycle of white-footed mice (peromyscus leucopus), 34 male and 60 female mice from either connecticut (ct), virginia (va), or georgia (ga) laboratory stocks were exposed to either a long (16l:8d) or short (9l:15d) photoperiod for up to 27 weeks. reproductive status (testis length or the presence of a perforate vagina) of these mice was assessed every 1 to 2 weeks. after this time, the males w ... | 1982 | 7126737 |
| serologic evidence of infection with ehrlichia spp. in wild rodents (muridae: sigmodontinae) in the united states. | rodent (muridae: sigmodontinae) blood and sera collected from 14 states were tested for seroreactivity to a cultured isolate of the human granulocytic ehrlichiosis (hge) agent by using an indirect immunofluorescence assay. of the 1,240 samples tested, 136 (11%) were found to be reactive at titers of > or = 32. rodents with hge agent-specific antibodies were found in new york (23% of 491 samples; geometric mean endpoint titer [gmt] = 441), connecticut (11% of 100 samples; gmt = 481), california ( ... | 1998 | 9508298 |
| antibodies to granulocytic ehrlichiae in white-footed and cotton mice in eastern united states. | serum samples, collected from peromyscus leucopus (white-footed mouse) or peromyscus gossypinus (cotton mouse) during 1987 through 1990 in florida, georgia, maryland, mississippi, and north carolina (usa), and in 1997 in southern connecticut were analyzed by indirect fluorescent antibody (ifa) staining methods or western blot procedures for antibodies to granulocytic ehrlichiae. of the 82 sera from white-footed mice in connecticut tested by ifa methods with either the bds or nch-1 strain of the ... | 1999 | 10231752 |