That would put tens of micrograms of material in two slightly different places at the same time — and test whether quantum weirdness extends almost to the human scale. (sciencemag.org)
Ask for the number of micrograms per deciliter found in your child's blood. (chicagoparent.com)
Thyroid hormones are dosed in micrograms — that is just 1 / 1000th of a milligram! (thyroidpharmacist.com)