Sentence examples for toxin occur from inspiring English sources

All these biological effects induced by the toxin occur in the presence of a measurable PLA2 activity.

However, TAS gene pairs frequently contain a bacteriostatic rather than bacteriocidal toxin, occur chromosomally rather than on plasmids, and perform important regulatory functions in cellular responses to stress.

Spores of C. botulinum are ubiquitous in the environment (3 ), but growth and elaboration of toxin occur only under particular conditions that include an anaerobic, low-salt, low-acid environment.

The results showed that after 120 min of the TiO2/UV process, a partial decomposition of the toxin occurred, and after a further 2 h, its entire decomposition followed [33].

Complete protection was observed when polyclonal antibodies against ricin were administered 30 min prior to ricin administration (Fig 4A) showing clearly that when enough antibodies are in place in the mouse, complete clearance of toxin occurs.

The optimal temperature for the assay is 37°C (Figure 2E,F), which coincides with the temperature at which the natural action of the toxin occurs [53] and at which binding to the IgG antibody appears to be optimal.

Thus, the induction of DR4 and DR5 by snake venom toxin occurs independent of p53 in colon cancer cells.

Interestingly, induction of apoptosis in cell lines was detected within a few hours after treatment, indicating that uptake and intracellular processing of the toxin occurred efficiently and rapidly.

Altogether these experiments indicate that ATP release is not only due to a general plasma membrane damage but also because of a specific mechanism of ATP release induced by the toxin occurs in the initial 3 5 min after the intoxication.

The toxin occurs in imported dried food items such as dried figs and nuts, but the results from the present control regime shows that the risk to human health due to consumption of aflatoxin-contaminated foods is limited.

Because InsP6 is exclusive to eukaryotes and is present at cytosolic concentrations >10 μM, the evolution of a proteolytic biosensor responding to InsP6 appears to be an ingenious strategy for assuring that the functional activation of a secreted toxin occurs only once it has reached the host cell cytosol (Lupardus et al., 2008).