Assertion: threshold dose | /r/HasProperty | 0.02 milligrams
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Source sentences:
text: On April 19, 1943, Hofmann performed a self-experiment to determine the true effects of LSD, intentionally ingesting 0.25 milligrams (250 micrograms) of the substance, an amount he predicted to be a threshold dose (an actual threshold dose is 0.02 milligrams).