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iOS 16 is the sixteenth major release of Apple 's iOS mobile operating system for the iPhone. It is the successor of iOS 15, and was announced at the company's Worldwide Developers Conference (WWDC) on June 6, 2022, alongside iPadOS 16, [3] and released on September 13, 2022. It was succeeded by iOS 17 on September 18, 2023.
2016 (Saturday) 2015 (Friday) January 16 is the 16th day of the year in the Gregorian calendar ; 349 days remain until the end of the year (350 in leap years).
The proportion of AST to ALT in hepatocytes is about 2.5:1, but because AST is removed from serum by the liver sinusoidal cells twice as quickly (serum half-life t 1/2 = 18 hr) compared to ALT (t 1/2 = 36 hr), so the resulting serum levels of AST and ALT are about equal in healthy individuals, resulting in a normal AST/ALT ratio around 1.