Text this: A rocket-like encapsulation and delivery system with two-stage booster layers : pH-responsive poly(methacrylic acid)/poly(ethylene glycol) complex-coated hollow silica vesicles

 ______      ___      _  __   _    _    ______   
|      \\   / _ \\   | |/ // | || | || |      \\ 
|  --  //  | / \ ||  | ' //  | || | || |  --  // 
|  --  \\  | \_/ ||  | . \\  | \\_/ || |  --  \\ 
|______//   \___//   |_|\_\\  \____//  |______// 
`------`    `---`    `-` --`   `---`   `------`