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Bao Chang Wang, known as Ricky Wang, went missing in 2017. The Crown’s case is that Zhao ordered Wang’s murder after becoming angry that he either squirrelled away ingredients to make meth or that he was involved in a botched cook. Lawyers for Zhao and Gu say the Crown s case hinges on the evidence of convicted drug dealer Yanlong Piao, who they say he is a liar. Detective sergeant Roy Yu told the court on Wednesday that he was working with the Organised Crime Unit, when they raided a methamphetamine lab at a Sandringham home in 2019. Inside, police officers found Gu and Piao, along with drugs and meth lab equipment.
Helen Murray Free with her husband and scientific collaborator Alfred in 1955
Credit: BAYER
Helen Murray Free, who has died aged 98, was the co-developer, with her husband Alfred Free, of Clinistix, the first dip-and-read diagnostic test for diabetes and for monitoring glucose levels in urine, an achievement that revolutionised diagnostic testing.
Before the introduction of Clinistix in 1956, laboratory technicians tested for diabetes by adding a reagent to urine in a test tube and then heating the mixture over a Bunsen burner, a process that was not only cumbersome but also imprecise because it could not distinguish glucose from other sugars.
Working at Miles Laboratories in Indiana, the Frees worked out how to impregnate thin strips of filter paper with chemicals that changed colour based on the concentration of glucose present in the urine, the intensity of the resulting blue-green depending on the amount of peroxide, and hence, glucose, in the sample.
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With Lauren Morello, Sarah Owermohle and Alice Miranda Ollstein.
On Tap House Democrats ramp up drug pricing pressure on Biden. The newest MACPAC members are unveiled.
It’s Tuesday, welcome back to Prescription Pulse. John Oliver is the latest to take a look at the U.S. vaccination campaign. As always, send tips to David Lim ([email protected] or @davidalim).