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What is a picogram?—Darcy Costello, The Courier-Journal, 9 May 2021 How can minuscule changes in a cell’s mass be measured when the whole organism weighs just a picogram (10-12 grams)?—Jeffrey Marlow, Discover Magazine, 12 Oct. 2016 Even a trace amount of betamethasone — a picogram is a trillionth of one gram — is prohibited on race day in Kentucky, Maryland and New York, which are home to the sport’s Triple Crown races, and considered a violation.—The Salt Lake Tribune, 2 June 2021 Even a trace amount of betamethasone — a picogram is a trillionth of one gram — is prohibited on race day in Kentucky, Maryland and New York, which are home to the sport's Triple Crown races, and considered a violation.—BostonGlobe.com, 2 June 2021 Words such as picogram and betamethasone are likely unfamiliar to the average horse racing fan, but Dr. Mary Scollay knows them well.—Jason Frakes, The Courier-Journal, 11 May 2021 While a picogram is a trillionth of a gram, the test is for picograms per milliliter, and a horse can have 50,000 milliliters of blood.—Stephen Whyno, chicagotribune.com, 10 May 2021 Earlier methods for producing the material turned up mere picograms.—Courtney Linder, Popular Mechanics, 28 Jan. 2020
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