أرسل هذا في رسالة قصيرة: Rate of decline of antibody titers to pandemic influenza A (H1N1-2009) by hemagglutination inhibition and virus microneutralization assays in a cohort of seroconverting adults in Singapore

  ____       ___     _    _     ______     _____  
 |  _ \\    / _ \\  | \  / ||  /_   _//   / ___// 
 | |_| ||  | / \ || |  \/  ||   -| ||-    \___ \\ 
 | .  //   | \_/ || | .  . ||   _| ||_    /    // 
 |_|\_\\    \___//  |_|\/|_||  /_____//  /____//  
 `-` --`    `---`   `-`  `-`   `-----`  `-----`