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Antifungal activity of some Cuban Zanthoxylum species.
Ethanolic extracts of the trunk bark of Zanthoxylum fagara, Z. elephantiasis and Z. martinicense showed activity against different species of fungi. No antibacterial activity was detected.
Genotoxicity studies with mineral oils; effects of oils on the microbial mutagenicity of precursor mutagens and genotoxic metabolites.
In vitro genotoxicity assays are extensively used to predict carcinogenic activity in vivo. The standard microbial mutagenicity assays however often fail to yield positive results with mineral oilsExpand
The induction of mitotic gene conversion in the yeast, Saccharomyces cerevisiae JD1 by 4-chloromethylbiphenyl (4CMB), benzyl chloride (BC) and 4-hydroxymethylbiphenyl (4HMB).
The induction of mitotic gene conversion by 4CMB, BC and 4HMB was studied in both log-phase and stationary-phase cultures of the yeast, Saccharomyces cerevisiae JD1. Assays were performed both in theExpand
Plasmodium parasites in reptiles from the Colombia Orinoco-Amazon basin: a re-description of Plasmodium kentropyxi Lainson R, Landau I, Paperna I, 2001 and Plasmodium carmelinoi Lainson R, Franco CM,
Colombia is a megadiverse country with about 600 species of reptiles; however, there are few studies on species of hemoparasites found in this taxonomic group. Here, we document the presence ofExpand
Preparation and Characterisation of S9 Fractions
Many xenobiotics are only mutagenic after metabolism by the drug metabolising enzymes. Attention has focused on one of these enzymes ‘cytochrome P450’ (a generic term for a group of haem containingExpand
Haemocystidium spp., a species complex infecting ancient aquatic turtles of the family Podocnemididae: First report of these parasites in Podocnemis vogli from the Orinoquia
The genus Haemocystidium was described in 1904 by Castellani and Willey. However, several studies considered it a synonym of the genera Plasmodium or Haemoproteus. Recently, molecular evidence hasExpand
The Mutagenic Activity of the Structurally Related Compounds Benzidine (BZD) and 4,4″-Diaminoterphenyl (DAT) in the Salmonella/Mammalian-Microsome Assay
The mutagenic activity of BZD and DAT was investigated using the frameshift tester Salmonella typhimurium TA1538, and S9 prepared from the livers of Aroclor-induced F344 rats or non-induced chickens.