منابع مشابه
Lymphatic leukemia and pulmonary tumors in female Swiss mice fed bracken fern (Pteris aquilina).
Bracken fern (Pteris aquilina) mixed with a grain mixture (1:3 by weight) was fed to a group of 40 female 6-week-old Swiss mice intermittently every other week for a total experimental period of 60 weeks. Thirty-three mice survived 30 or more weeks and all developed lymphatic leukemia with multiple organ involvement. Additionally, 5 mice developed multiple pulmonary tumors. No urinary bladder o...
متن کاملAssay of fractions of bracken fern (Pteris aquilina) for carcinogenic activity.
fractions of bracken fern-fed cattle and of cows bearing spontaneous urinary bladder tumors contained some carcinogenic substance(s) which induced tumors in the bladder of the calf, dog, rat, or mouse and tumors in the skin of mice. It is not known whether this carcinogenic activity is attributable to bracken fern itself or to its metabolites. It has been shown (22) that the carcinogenicity of ...
متن کاملAssay of fractions of bovine urine for carcinogenic activity after feeding bracken fern (Pteris aquilina).
Urine from cattle fed fresh and dried bracken fern for more than 2 years and urine from control cattle was extracted with ethyl acetate and divided into nonacidic and acidic fractions. The residue obtained after removal of the solvent was mixed with 4 times its weight of cholesterol, and the mixture was converted to pellets with the aid of a pellet press. Pellets containing these residues were ...
متن کاملThe induction of neoplasms of the urinary bladder of the cow and the small intestine of the rat by feeding bracken fern (Pteris aquilina).
Cattle were fed a diet containing bracken fern in the continuation of a study of the urinary bladder neoplasms produced under these conditions. One of the cattle died of a traumatic pericarditis and had no bladder lesion at 485 days. The other six animals fed bracken fern for from 510 to 1920 days all had gross bladder neoplasms. Four of the six animals with gross bladder neoplasms had transiti...
متن کاملCharacterization of arsenic-resistant endophytic bacteria from hyperaccumulators Pteris vittata and Pteris multifida.
We isolated and characterized As-resistant endophytic bacteria (AEB) from two arsenic hyperaccumulators. Their plant growth promoting traits and the relation between As tolerance and transformation were evaluated. A total of 41 and 33 AEB were isolated from Pteris vittata (PV) and Pteris multifida (PM) respectively. PV AEB represented 2genera while PM AEB comprised of 12 genera, with Bacillus s...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 1888
ISSN: 0305-7364,1095-8290
DOI: 10.1093/aob/os-2.3.383