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The phrase "an indication of toxicity" is correct and usable in written English.
You can use it when discussing signs or evidence that suggest harmful or toxic characteristics in a substance, behavior, or situation.
Example: "The presence of unusual symptoms in the test subjects was an indication of toxicity in the chemical compound."
Alternatives: "a sign of toxicity" or "a marker of toxicity".
Exact(2)
After each injection the mice had very slow movements and major decreases in cage activity for several hours – an indication of toxicity.
Body weight was used as an indication of toxicity.
Similar(58)
However, no staining with thioflavin S, FSB or AT100 was observed, suggesting that tau filaments were not present, nor was there any indication of toxicity, as shown by propidium iodide staining.
Moreover, because of their nanosize dimensions and sensitivity to low pH, they can be quickly degraded when taken up by the cells in their acidic vesicles, without any indication of toxicity.
Selectivity indices (SI = CC50/EC50) [ 32] were calculated for each extract as an indication of its toxicity relative to the observed antimalarial activity.
Continuous feeding for 18 days with diet delivering the same daily doses of TBE-31 under conditions of concurrent treatment with the immunosuppressive agent azathioprine had a similar effect on Nrf2 activation without any indications of toxicity.
Seventy-two hr treatment with high glucose caused a dramatic reduction in both Insulin 1 and Insulin 2 gene expression, an indication of glucose toxicity (Fig. 1B).
The spleen index was measured as an indication of systemic toxicity induced by Cisplatin.
The effects of this agent were also assessed in the same monkeys using food-maintained responding to provide an indication of behavioral toxicity.
Serum concentrations of liver enzymes were also measured to provide an indication of potential toxicity (Danan and Benichou, 1993; Amacher, 1998).
Such a test – in which an ant is dropped into breastmilk and its demise is seen as an indication of the toxicity of the milk– is performed by grandmothers and other influential community members.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com