| serologic prevalence of toxoplasmosis in cattle, sheep, goats, pigs, bison, and elk in montana. | serum samples from 2,539 cattle, 649 sheep, 123 goats, 413 pigs, 93 bison, and 56 elk from montana were examined for antibody to toxoplasma gondii in the sabin-feldman dye test or the modified agglutination test (mat). cattle, bison, and elk serum samples were treated with 0.2 m-mercaptoethanol before examination in mat. in the dye test, 13.2% of sheep, 5.0% of pigs, and 22.7% of goats had antibody at a dilution of greater than or equal to 1:16. in the mat, 3.2% of cattle, 3.1% of bison, and non ... | 1985 | 3997650 |
| experimental pasteurellosis: comparative studies on pasteurella multocida from asia, africa, and north america. | | 1967 | 6070947 |
| isolation of a spotted fever group rickettsia from the pacific coast tick, ixodes pacificus, in oregon. | a rickettsia of the spotted fever group was isolated on three occasions from ixodes pacificus in western oregon. these isolations, and additional evidence furnished by complement fixation tests on guinea pigs inoculated with other oregon ticks of this species, indicate that the association of this rickettsia with the pacific coast tick may be widespread. this is the first isolation of a spotted fever group rickettsia from i. pacificus. because the oregon isolates are mildly virulent for guinea p ... | 1976 | 937637 |
| continuous non-therapeutic use of antibacterial drugs in feed and drug resistance of the gram-negative enteric florae of food-producing animals. | fecal samples from illinois farm animals and montana range cattle were examined for the frequency of gram-negative enteric organisms resistant to oxytetracycline, dihydrostreptomycin, or ampicillin. the illinois farm animals were continually fed rations containing various antibacterial drugs. the montana range cattle had minimal exposure to antibacterial drugs. the majority of samples from illinois farm animals demonstrated 10% or more antibiotic-resistant organisms. in contrast, resistant organ ... | 1974 | 4615630 |
| a new virus, "mml", enzootic in bats (myotis lucifugus) of montana. | | 1964 | 14198669 |
| nonpathogenic rickettsias related to the spotted fever group isolated from ticks, dermacentor variabilis and dermacentor andersoni from eastern montana. | | 1963 | 14053295 |